Lower plastic of battery cover plate and battery cover plate

Abstract

The utility model discloses battery cover plate lower plastic cement and a battery cover plate, the battery cover plate lower plastic cement is of an integrated structure and is composed of a first part and a second part, the first part and the second part are respectively located at two ends of the battery cover plate lower plastic cement in the length direction and are mutually connected to form an explosion-proof valve limiting groove, and the explosion-proof valve limiting groove is connected with the battery cover plate lower plastic cement. Wherein the first part is provided with a liquid injection hole, the second part is provided with an elastic connecting structure, and the elastic connecting structure penetrates through the second part in the width direction of the lower plastic of the battery cover plate. According to the battery cover plate lower plastic and the battery cover plate provided by the invention, the problem of shrinkage of the center distance between the two poles of the lower plastic can be solved, and the problem of low assembly efficiency can also be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery covers, in particular to the plastic under the battery cover and the battery cover. Background Art

[0002] A battery cover 300, such as a new energy battery cover, generally includes a light cover 310, an upper plastic and a lower plastic 320. The upper plastic is further divided into a positive upper plastic 330 and a negative upper plastic 340. The lower plastic 320, as a main component of the battery structure, plays a very important role in the connection of other structures and the insulation of the battery cover.

[0003] Currently, the lower plastic 320 is designed as an integral structure or a split structure. In the integral structure, due to the shrinkage of the material and the release of stress after injection molding of the lower plastic 320, over time, the center distance between the two pole holes of the lower plastic 320 is likely to shrink, which has a great impact on the position accuracy of the pole during the later assembly process, and thus is likely to cause poor positive resistance and poor negative insulation. In the split structure, although the problem of the shrinkage of the center distance of the pole after the lower plastic 320 shrinks is improved, during the production and assembly process, the assembly of the lower plastic 320 changes from one step to two steps, which will affect the production efficiency. Summary of the Utility Model

[0004] The embodiment of the present application provides a plastic under the battery cover and a battery cover, which can solve both the problem of the shrinkage of the center distance between the two poles of the lower plastic and the problem of low assembly efficiency.

[0005] The first aspect of the embodiment of the present application provides a plastic under the battery cover. The plastic under the battery cover is an integral structure and is composed of a first part and a second part. The first part and the second part are respectively located at both ends of the length direction of the plastic under the battery cover and are connected to each other to form an explosion-proof valve limiting groove. The first part is provided with a liquid injection hole, and the second part is provided with an elastic connection structure. The elastic connection structure penetrates the second part in the width direction of the plastic under the battery cover.

[0006] In a possible implementation manner, a pole hole is opened at one end of the second part far from the first part. The elastic connection structure is located between the explosion-proof valve limiting groove and the pole hole and is close to the explosion-proof valve limiting groove.

[0007] In a possible implementation manner, the elastic connection structure has a connecting rib and a connecting gap distributed in sequence at the center line position in the width direction of the plastic under the battery cover.

[0008] In a possible implementation, the elastic connection structure includes a plurality of umbrella-shaped gaps evenly distributed along the width direction of the plastic under the battery cover plate. The umbrella-shaped gaps extend along the length direction of the plastic under the battery cover plate, and the extension directions of two adjacent umbrella-shaped gaps are opposite. An arc-shaped gap extending to between the umbrella handle and the umbrella leaf is provided at the boundary of the plastic under the battery cover plate in the width direction.

[0009] In a possible implementation, the elastic connection structure includes a plurality of two-tooth harpoon gaps symmetrically distributed along the width direction of the plastic under the battery cover plate, and the openings of the symmetrically distributed two-tooth harpoon gaps face opposite directions. In the symmetric direction, two adjacent two-tooth harpoon gaps with opposite openings and adjacent to each other are connected. An auxiliary gap inserted into the two-tooth harpoon gap is provided at the boundary of the plastic under the battery cover plate in the width direction, and the auxiliary gap is opposite to the fork handle gap of the two-tooth harpoon gap.

[0010] A second aspect of the embodiments of the present application provides a battery cover plate, including a light cover plate, an upper plastic, and the plastic under the battery cover plate as described above, wherein the upper plastic and the plastic under the battery cover plate are respectively disposed on two opposite surfaces of the light cover plate.

[0011] Beneficial effects: Compared with the prior art, the plastic under the battery cover plate and the battery cover plate provided in the present application are provided with an elastic connection structure on the plastic under the battery cover plate with an integrated structure. At the same time, the elastic connection structure penetrates the plastic under the battery cover plate in the width direction of the plastic under the battery cover plate, and the problem of shrinkage of the center distance of the lower plastic pole can be compensated by the elastic connection structure, and the assembly efficiency is high.

[0012] These and other objects, features, and advantages of the present utility model are fully embodied through the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 An exploded structural schematic diagram of a battery cover plate in the prior art of the present application is shown.

[0014] Figure 2 A structural schematic diagram of the plastic under the battery cover plate of the present application is shown.

[0015] Figure 3 A top view structural schematic diagram of the plastic under the battery cover plate of the present application is shown.

[0016] Figure 4 A top view structural schematic diagram of the plastic under the battery cover plate of the present application is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present utility model defined in the following description can be applied to other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present utility model.

[0018] Those skilled in the art should understand that in the disclosure of the specification, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0019] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the quantity.

[0020] Reference Figures 2 to 4 , an embodiment of the present application provides a plastic under the battery cover. The plastic under the battery cover 100 is an integral structure, composed of a first part 10 and a second part 20. The first part 10 and the second part 20 are respectively located at both ends of the length direction of the plastic under the battery cover 100 and are connected to each other to form an explosion-proof valve limiting groove 101 of the plastic under the battery cover 100 for limiting the placement of the explosion-proof valve. The first part 10 is provided with a liquid injection hole 102. The second part 20 is provided with an elastic connection structure 21. At the same time, the elastic connection structure 21 penetrates the second part 20 in the width direction of the plastic under the battery cover 100. In this way, on the one hand, setting the elastic connection structure 21 in the second part 20 can avoid the liquid injection hole 102 and prevent affecting the structural strength of the first part 10. On the other hand, the plastic under the battery cover 100 is still an integral structure, which is convenient for one-step assembly and forming, and has high assembly efficiency. On the third hand, when the center distance between the two poles of the plastic under the battery cover shrinks, the elastic connection structure 21 can be slightly stretched in the left-right direction to compensate for the shrinkage amount, thereby avoiding the defect of the shrinkage affecting the position accuracy of the poles, and further ensuring the quality of the battery cover.

[0021] In one embodiment, a pole hole 201 is provided at one end of the second part 20 away from the first part 10. At the same time, the elastic connection structure 21 is located between the explosion-proof valve limiting groove 101 and the pole hole 201 and is close to the explosion-proof valve limiting groove 101. Thus, on the basis of elastic connection to compensate for the shrinkage amount, the influence on the position of the pole hole 201 can also be reduced, ensuring the assembly quality of the pole assembly at this position.

[0022] In one embodiment, the elastic connection structure 21 is located at the center line position in the width direction of the lower plastic 100 of the battery cover plate ( Figure 3 arrow direction), and a connecting rib 211 and a connecting gap 212 are sequentially distributed. Among them, the connecting rib 211 plays an elastic connection role, and the connecting gap 212 provides a margin space for the extension of the connecting rib 211.

[0023] As a preferred embodiment, combined with Figure 3 , the elastic connection structure 21 includes a plurality of umbrella-shaped gaps 213 evenly distributed along the width direction of the lower plastic 100 of the battery cover plate. The umbrella-shaped gaps 213 extend along the length direction of the lower plastic 100 of the battery cover plate, and the extension directions of two adjacent umbrella-shaped gaps 213 are opposite. At the same time, an arc-shaped gap 214 extending to between the umbrella handle 2131 and the umbrella leaf 2132 of the umbrella-shaped gap 213 is provided at the boundary of the lower plastic 100 of the battery cover plate in the width direction.

[0024] As another preferred embodiment, combined with Figure 4 , the elastic connection structure 21 includes a plurality of two-tooth harpoon gaps 215 symmetrically distributed along the width direction of the lower plastic 100 of the battery cover plate, and the openings of the symmetrically distributed two-tooth harpoon gaps 215 face opposite directions. In the symmetric direction, two adjacent two-tooth harpoon gaps 215 with opposite openings and adjacent to each other are connected. At the same time, an auxiliary gap 216 inserted into the two-tooth harpoon gap 215 is provided at the boundary of the lower plastic 100 of the battery cover plate in the width direction, and the auxiliary gap 216 is opposite to the fork handle gap 2151 of the two-tooth harpoon gap 215.

[0025] The second aspect of the embodiments of the present application provides a battery cover plate, including a light cover plate, an upper plastic, and the lower plastic 100 of the battery cover plate as described above, wherein the upper plastic and the lower plastic 100 of the battery cover plate are respectively arranged on two opposite surfaces of the light cover plate.

[0026] It should be noted that the terms "first, second" in the present application are only used for descriptive purposes, do not represent any order, and cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0027] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The advantages of the present utility model have been fully and effectively realized. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments. Without departing from the said principles, any deformation or modification of the embodiments of the present utility model is possible.

Claims

1. The plastic under the battery cover is characterized by: The plastic under the battery cover is an integrated structure, consisting of a first part and a second part, wherein the first part and the second part are respectively located at the two ends of the length direction of the plastic under the battery cover, and are connected to each other to form an explosion-proof valve limiting groove, wherein the first part is provided with a liquid injection hole, wherein the second part is provided with an elastic connection structure, and the elastic connection structure passes through the second part in the width direction of the plastic under the battery cover.

2. The plastic under the battery cover as claimed in claim 1, characterized in that: The second part is provided with a pole hole at one end away from the first part, and the elastic connection structure is located between the explosion-proof valve limiting groove and the pole hole and is close to the explosion-proof valve limiting groove.

3. The plastic under the battery cover as claimed in claim 2, characterized in that: The elastic connection structure has connection ribs and connection gaps distributed in sequence at the center line position in the width direction of the plastic under the battery cover.

4. The plastic under the battery cover as claimed in claim 3, characterized in that: The elastic connection structure includes a plurality of umbrella-shaped gaps evenly distributed along the width direction of the plastic under the battery cover plate, the umbrella-shaped gaps extend along the length direction of the plastic under the battery cover plate, and the extension directions of two adjacent umbrella-shaped gaps are opposite, and the plastic under the battery cover plate is provided with an arc-shaped gap between an umbrella handle and an umbrella leaf extending to the umbrella-shaped gap at the boundary in the width direction.

5. The plastic under the battery cover as claimed in claim 3, characterized in that: The elastic connection structure includes a plurality of two-tooth harpoon gaps symmetrically distributed in the width direction of the plastic under the battery cover, and the openings of the symmetrically distributed two-tooth harpoon gaps face opposite directions. In the symmetrical direction, two two-tooth harpoon gaps with opposite and adjacent openings are connected, and an auxiliary gap inserted into the two-tooth harpoon gap is provided at the boundary of the plastic under the battery cover in the width direction, and the auxiliary gap is opposite to the fork handle gap of the two-tooth harpoon gap.

6. Battery cover, characterized in that: It comprises a light cover, an upper plastic and a lower plastic of a battery cover as claimed in any one of claims 1 to 5, wherein the upper plastic and the lower plastic of the battery cover are respectively arranged on two opposite surfaces of the light cover.

Images