CN219979775U

CN219979775U - Power battery cover plate with riveting structure

Info

Publication number: CN219979775U
Application number: CN202320597372.1U
Authority: CN
Inventors: 蹇印军; 彭建豪
Original assignee: Zhongshan Runye New Energy Technology Co ltd
Current assignee: Zhongshan Runye New Energy Technology Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-11-07
Anticipated expiration: 2033-03-22

Abstract

The utility model discloses a power battery cover plate with a riveting structure, which comprises a polar terminal, a base plate and a lower plastic piece, wherein the base plate and the lower plastic piece are respectively provided with a terminal groove, the polar terminal penetrates through the terminal grooves of the base plate and the lower plastic piece, and the polar terminal is fastened on the lower plastic piece so as to assemble the polar terminal, the base plate and the lower plastic piece together. The device has the advantages of simple structure, compact matching, reasonable design and the like; therefore, it is a product with excellent performance both technically and economically.

Description

Power battery cover plate with riveting structure

Technical Field

The utility model mainly relates to a power battery cover plate with a riveting structure.

Background

With the rapid development of energy storage technology and electric vehicle technology, the battery power supply for more environmental protection is increasingly widely applied, and the requirements on high capacity, high endurance and small volume of the battery are also increasingly stringent.

The reliability of the connection of the top cover plate, which is a part connecting the aluminum case and the pole, to the pole will directly affect the reliability and stability of the conduction of the battery. Particularly, for the drawing force, the torsion-resistant state and the connection reliability of the pole, the actual working performance of the battery pack is directly determined, the corresponding battery unit is directly invalid due to the connection failure, the battery pack endurance is influenced, the battery is seriously short-circuited, and the whole battery pack is invalid.

In the prior art, the connection between the top cover plate and the pole is generally welded, and the welding has high requirement on the automation of equipment because the welding can cause protrusion, which has a slight influence on the assembly of the subsequent process. In view of this, we propose a new pole connection structure.

Disclosure of Invention

In order to solve the problem of connection of polar posts (polar terminals) of a battery cover plate, the utility model provides a new structural scheme, and the power battery cover plate with the riveting structure adopts the following technical scheme:

the utility model provides a riveting structure power battery apron, it includes polarity terminal, base plate and lower working of plastics all are equipped with the terminal groove, and polarity terminal passes the terminal groove of base plate and lower working of plastics both, and polarity terminal fastening is in lower working of plastics to assemble polarity terminal, base plate and lower working of plastics together.

Preferably, the polar terminal comprises an upper plastic part, a fastener, an upper welding block and a sealing gasket, wherein the fastener passes through terminal grooves of the substrate and the lower plastic part to be fastened on the lower plastic part, and the upper plastic is pressed and connected to the end face of the substrate through the fastener.

Preferably, the fastener is an integral structure, the fastener comprises a tray, an extension wall and a buckling edge, the extension wall is positioned between the tray and the buckling edge, and the tray, the extension wall and the buckling edge are matched so that a clamping groove is formed at the extension wall.

Preferably, the fastener is provided with a first supporting cavity, the upper plastic part is provided with a second supporting cavity, the size of the first supporting cavity is larger than that of the upper welding block, and the upper welding block is arranged in the first supporting cavity; the size of the second support cavity is larger than that of the fastener, and the fastener is arranged in the second support cavity.

Preferably, the terminal groove includes a first terminal groove and a second terminal groove, the first terminal groove is provided on the substrate, and the second terminal groove is provided on the lower plastic member.

Preferably, the second terminal groove extends to form a step-shaped connecting ring, and the connecting ring is at least partially embedded in the first terminal groove when the substrate is connected with the lower plastic piece.

Preferably, the upper plastic part is provided with a through hole, and the extending wall of the fastener penetrates through the through hole, the first terminal groove and the second terminal groove to enable the fastening edge to be abutted against the lower plastic part.

Preferably, the sealing gasket is arranged at the through hole, and the upper plastic piece is abutted against the sealing gasket.

Compared with the background technology, the utility model has the beneficial effects that:

in order to improve the influence of the existing welding mode, the structure replaces the traditional welding by riveting; the extending wall of the fastener enters from the through hole and extends to the second terminal groove, the extending wall is deformed to form a buckling edge in a riveting mode, and the lower plastic piece is buckled by the buckling edge of the polar terminal, so that the polar terminal, the base plate and the lower plastic piece are assembled into a whole. And meanwhile, a sealing gasket is arranged at the through hole, and a plastic piece is pressed by using a fastener, so that the sealing performance of the power battery cover plate is enhanced.

Drawings

FIG. 1 is a schematic view of a power cell cover plate with a rivet structure according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic diagram of a power cell cover plate with a rivet structure according to a preferred embodiment of the present utility model;

FIG. 3 is a schematic partial cross-sectional view of a power cell cover plate with a rivet structure according to a preferred embodiment of the present utility model;

FIG. 4 is a partially exploded cross-sectional view of a power cell cover plate with a rivet structure according to a preferred embodiment of the present utility model;

fig. 5 is a schematic view of an initial state of a fastener according to a preferred embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout.

In the present utility model, unless explicitly stated and limited otherwise, the terms "assembled," "connected," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; can be directly connected or connected through an intermediate medium, and can be communicated with the inside of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The technical scheme and the beneficial effects of the utility model are more clear and definite by further describing the specific embodiments of the utility model with reference to the drawings in the specification. The embodiments described below are exemplary by referring to the drawings for the purpose of illustrating the utility model and are not to be construed as limiting the utility model.

The preferred embodiments provided by the utility model are: as shown in fig. 1 to 5, the power battery cover plate with the riveting structure comprises a polar terminal 1, a base plate 2 and a lower plastic part 3, wherein the base plate 2 and the lower plastic part 3 are respectively provided with a terminal groove 4, the polar terminal 1 passes through the terminal grooves 4 of the base plate 2 and the lower plastic part 3, and the polar terminal 1 is fastened on the lower plastic part 3 so as to assemble the polar terminal 1, the base plate 2 and the lower plastic part 3 together. The polar terminal comprises a positive terminal and a negative terminal, the structures of the positive terminal and the negative terminal are consistent, the whole polar terminal is oblong, and the shape of the terminal groove corresponds to the shape of the polar terminal.

The polar terminal 1 comprises an upper plastic part 5, a fastener 6, an upper welding block 7 and a sealing gasket 8, wherein the fastener 6 penetrates through the terminal grooves 4 of the base plate 2 and the lower plastic part 3 to be fastened on the lower plastic part 3, and the upper plastic is pressed and connected to the end face of the base plate 2 through the fastener 6.

The fastener 6 is an integral structure, the fastener 6 includes a tray 61, an extension wall 62 and a fastening edge 63, the extension wall 62 is located between the tray 61 and the fastening edge 63, the dimensions of the tray 61 and the fastening edge 63 are both larger than those of the extension wall 62, and the tray 61, the extension wall 62 and the fastening edge 63 cooperate to form a clamping groove 64 at the extension wall 62.

The fastener 6 is provided with a first supporting cavity 65, the upper plastic part 5 is provided with a second supporting cavity 51, the size of the first supporting cavity 65 is larger than that of the upper welding block 7, and the upper welding block 7 is arranged in the first supporting cavity 65; the second cavity 51 is larger than the fastener 6, and the fastener 6 is mounted in the second cavity 51.

The terminal groove 4 includes a first terminal groove 41 and a second terminal groove 42, the first terminal groove 41 is provided on the base plate 2, and the second terminal groove 42 is provided on the lower plastic member 3; the second terminal groove 42 extends to form a stepped connection ring 43, and when the substrate 2 is connected to the lower plastic part 3, the connection ring 43 is at least partially embedded in the first terminal groove 41, and the first terminal groove 41 is correspondingly provided with a recess 44 to adapt to the stepped connection ring 43.

The upper plastic part 5 is provided with a through hole 52, the sealing gasket 8 is arranged at the through hole 52, and the upper plastic part 5 is abutted against the sealing gasket 8 so as to fill the space of the through hole 52 to enhance the air tightness; the extending wall 62 of the fastener 6 passes through the through hole 52, the first terminal groove 41 and the second terminal groove 42, and the fastening edge 63 is abutted against the lower plastic member 3, and the fastening edge 63 is abutted against the stepped portion of the second terminal groove 42.

In the prior art, the connection between the top cover plate and the pole is generally welded, and the welding has high requirement on the automation of equipment because the welding can cause protrusion, which has a slight influence on the assembly of the subsequent process.

In order to improve the influence of the existing welding mode, the structure adopts riveting to replace the traditional welding. As shown in fig. 5, fig. 5 is an initial state diagram of the fastener 6, where the extending wall 62 of the fastener 6 is in a vertical state, the components are assembled, the vertical extending wall 62 of the fastener 6 in the initial state enters from the through hole and extends to the second terminal slot, the extending wall 62 is deformed by riveting to form a fastening edge 63, and finally, the shape of the fastener is as shown in fig. 4, the lower plastic part is fastened by the fastening edge 63 of the polar terminal, so that the polar terminal 1, the substrate 2 and the lower plastic part 3 are assembled into a whole. And meanwhile, a sealing gasket is arranged at the through hole, and a plastic piece is pressed by using a fastener, so that the sealing performance of the power battery cover plate is enhanced.

In the description of the present utility model, a description of the terms "one embodiment," "preferred," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model, and a schematic representation of the terms described above in the present specification does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

From the above description of the structure and principles, it should be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, but rather that modifications and substitutions using known techniques in the art on the basis of the present utility model fall within the scope of the present utility model, which is defined by the appended claims.

Claims

1. The utility model provides a riveting structure power battery apron which characterized in that: the device comprises a polar terminal, a base plate and a lower plastic part, wherein the base plate and the lower plastic part are respectively provided with a terminal groove, the polar terminal penetrates through the terminal grooves of the base plate and the lower plastic part, and the polar terminal is fastened on the lower plastic part so as to assemble the polar terminal, the base plate and the lower plastic part together.

2. The power cell cover plate of a rivet structure of claim 1, wherein: the polar terminal comprises an upper plastic part, a fastener, an upper welding block and a sealing gasket, wherein the fastener penetrates through terminal grooves of the substrate and the lower plastic part to be fastened on the lower plastic part, and the upper plastic is in pressure connection with the end face of the substrate through the fastener.

3. The power cell cover plate of a rivet structure according to claim 2, wherein: the fastener is of an integrated structure, the fastener comprises a tray, an extension wall and a buckling edge, the extension wall is positioned between the tray and the buckling edge, and the tray, the extension wall and the buckling edge are matched so that a clamping groove is formed at the extension wall.

4. The power cell cover plate of a rivet structure according to claim 2, wherein: the fastener is provided with a first supporting cavity, the upper plastic part is provided with a second supporting cavity, the size of the first supporting cavity is larger than that of the upper welding block, and the upper welding block is arranged in the first supporting cavity; the size of the second support cavity is larger than that of the fastener, and the fastener is arranged in the second support cavity.

5. The power cell cover plate of a rivet structure of claim 1, wherein: the terminal groove includes first terminal groove and second terminal groove, and the base plate is located to first terminal groove, and lower working of plastics is located to the second terminal groove.

6. The power cell cover plate of a rivet structure of claim 5, wherein: the second terminal groove extends out of the step-shaped connecting ring, and the connecting ring is at least partially embedded in the first terminal groove when the substrate is connected with the lower plastic piece.

7. The power cell cover plate of a rivet structure according to claim 2, wherein: the upper plastic part is provided with a through hole, and the extending wall of the fastener penetrates through the through hole, the first terminal groove and the second terminal groove to enable the fastening edge to be abutted against the lower plastic part.

8. The power cell cover plate of a rivet structure according to claim 2, wherein: the sealing gasket is arranged at the through hole, and the upper plastic part is abutted against the sealing gasket.