Power battery cover plate assembly structure

Abstract

The application discloses a power battery cover plate assembly structure, which comprises an electricity connection terminal and a cover plate structural member; the electricity connection terminal comprises upper plastic, a metal ring and a pole, and the upper plastic, the metal ring and the pole are all circular structures; the upper plastic is provided with an embedding groove, and the embedding groove is arranged around the upper plastic; the metal ring is provided with a containing cavity, the pole is placed in the containing cavity, the top of the metal ring is provided with a clamping ring, and the clamping ring is inserted into the embedding groove; the cover plate structural member comprises a base plate and a lower insulating sheet; the lower insulating sheet is provided with an insertion block; the base plate is provided with a clamping hole, and the position of the clamping hole corresponds to that of the insertion block; the top of the insertion block is provided with a clamping part protruding outward, and the end surface of the clamping part is an inclined surface; and the insertion block is clamped at the clamping hole by the clamping part, so as to realize the assembly of the base plate and the lower insulating sheet into a whole. The power battery cover plate assembly structure has the advantages of simple structure, compact cooperation, reasonable design and the like; therefore, the power battery cover plate assembly structure is a product with superior technical and economic performances.

Description

TECHNICAL FIELD

[0001] The application mainly relates to a power battery cover plate assembly structure. BACKGROUND

[0002] With the gradual heating of the electric vehicle industry, the development of the lithium ion battery industry is driven, and the application of power lithium ion batteries is also more and more widely, and the battery cover plate is an important part of the power battery; the battery cover plate has a power terminal, and the traditional processing technology is to sequentially add each component of the power terminal to the terminal position of the battery cover plate, and the power terminal is packaged on the battery cover plate by injection molding, welding or riveting. This processing technology is complicated, and deviation is inevitable in the production process, which causes the increase of defective products, affects the production efficiency, and increases the burden of enterprises; at the same time, the traditional processing method needs to be sealed from the inside of the battery cover plate when the last part of the battery terminal is fixed, which increases the processing difficulty; therefore, it is necessary to propose a new packaging structure to reduce the assembly difficulty of the power battery cover plate. SUMMARY

[0003] In order to reduce the assembly difficulty of the power battery cover plate, a power battery cover plate assembly structure is proposed, and the following technical scheme is adopted:

[0004] A power battery cover plate assembly structure, which comprises a power terminal and a cover plate structure.

[0005] The power terminal comprises an upper plastic, a metal ring and a pole, and the upper plastic, the metal ring and the pole are all circular structures.

[0006] The upper plastic is provided with an embedded groove, and the embedded groove is arranged around the upper plastic; the metal ring has a receiving cavity, and the pole is placed in the receiving cavity; the top of the metal ring is provided with a snap ring, which is inserted into the embedded groove; and the upper plastic is connected with the metal ring in a matched mode to package the pole in the receiving cavity.

[0007] The cover plate structure comprises a base plate and a lower insulating sheet.

[0008] The lower insulating sheet is provided with an insertion block, and the insertion block protrudes from the end face of the lower insulating sheet; the base plate is provided with a clamping hole, and the position of the clamping hole corresponds to that of the insertion block; the top of the insertion block is provided with a clamping portion protruding outward, and the end face of the clamping portion is an inclined face; and the insertion block is clamped in the clamping hole by the clamping portion, so that the base plate and the lower insulating sheet are assembled as a whole.

[0009] Preferably, the side wall of the metal ring is provided with a plurality of clamping holes penetrating the side wall of the metal ring.

[0010] Preferably, the embedded groove is provided with a plurality of clamping columns, and the clamping columns are connected with the clamping holes in a matched mode.

[0011] Preferably, a sealing ring is arranged between the pole column and the metal ring.

[0012] Preferably, the pole column comprises an upper pole column and a lower pole column, and the upper pole column and the lower pole column are in split structure.

[0013] Preferably, the upper pole column comprises a bottom and a convex part, and the diameter of the bottom is larger than that of the convex part.

[0014] Preferably, the upper plastic and the metal ring are both provided with a through hole, and the convex part of the upper pole column is arranged at the through hole of the upper plastic.

[0015] Preferably, the middle part of the lower insulating sheet is provided with a gap, and the gap is provided with a bent elastic strip.

[0016] Preferably, the electric terminal is in circular or polygonal shape.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] According to the above scheme, the electric terminal and the cover plate structural member are independently manufactured, the electric terminal is directly arranged at the terminal position of the cover plate structural member, and then the two are combined and packaged, and the packaging is directly performed on the end surface of the cover plate structural member, so that the processing is more simple and convenient; the independent manufacturing of the electric terminal and the cover plate structural member improves the fault tolerance rate between each component, and the manufacturing is more convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A power battery cover plate assembly structure provided in the preferred embodiment of the present application is shown in the figure;

[0020] Figure 2 A power battery cover plate assembly structure provided in the preferred embodiment of the present application is shown in the figure;

[0021] Figure 3 A power battery cover plate assembly structure provided in the preferred embodiment of the present application is shown in the figure;

[0022] Figure 4 A power battery cover plate assembly structure provided in the preferred embodiment of the present application is shown in the figure;

[0023] Figure 5 A power battery cover plate assembly structure provided in the preferred embodiment of the present application is shown in the figure;

[0024] Figure 6 A power battery cover plate assembly structure provided in the preferred embodiment of the present application is shown in the figure;

[0025] Figure 7 A power battery cover plate assembly structure provided in the preferred embodiment of the present application is shown in the figure;

[0026] Figure 8 This is a schematic diagram of a conventional cover plate structure in a preferred embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the polygonal electrical terminals in a preferred embodiment of the present invention.

Detailed Implementation Methods

[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and its beneficial effects clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the invention.

[0031] The preferred embodiments provided by the present invention are as follows: Figures 1-9 As shown, a power battery cover assembly structure includes a power terminal 1 and a cover structure 2. The power terminal is circular or polygonal in shape. In this embodiment, the polygon is square.

[0032] The cover plate structure 2 includes a base plate 10 and a lower insulating sheet 20;

[0033] The lower insulating sheet 20 has an insertion block 21 on the side facing the substrate 10. The insertion block 21 protrudes from the end face of the lower insulating sheet 20. The substrate 10 has a snap-fit ​​hole 11, and the snap-fit ​​hole 11 and the insertion block 21 are positioned to facilitate the mating and connection of the substrate 10 and the lower insulating sheet 20. The top of the insertion block 21 has an outwardly protruding locking part 22. The end face of the locking part 22 is inclined, which facilitates the smooth insertion of the insertion block into the snap-fit ​​hole. The outwardly protruding locking part 22 restricts the lower insulating sheet 20 from detaching from the substrate 10. The insertion block is secured to the snap-fit ​​hole by the locking part to realize the assembly of the substrate and the lower insulating sheet into a whole.

[0034] The lower insulation sheet 20 is provided with an insertion part 23 on each side, and is divided into two parts, and a gap 24 is arranged in the middle part of the lower insulation sheet, and a bending elastic strip 25 is arranged in the gap 24. The two parts of the insulation sheet on both sides of the gap are connected by the bending elastic strip 25, and the position of the lower insulation sheet can be adjusted by the bending elastic strip, so that the compact connection is facilitated.

[0035] The power terminal 1 comprises an upper plastic 30, a metal ring 40 and a pole 50, and the upper plastic 30, the metal ring 40 and the pole 50 are all circular structures;

[0036] The upper plastic 30 is provided with an embedded groove 31, and the embedded groove 31 is arranged around the upper plastic 30; the metal ring 40 has a receiving cavity 41, and the pole 50 is placed in the receiving cavity 41; the top of the metal ring 40 is provided with a clamping ring 42, and the clamping ring 42 is inserted into the embedded groove 31; the embedded groove 31 is provided with a plurality of clamping columns 32; the side wall of the metal ring 40 is provided with a plurality of clamping holes 43, and the clamping holes 43 penetrate the side wall of the metal ring 40; the upper plastic 30 and the metal ring 40 are connected by the cooperation of the clamping columns 32 and the clamping holes 43 to encapsulate the pole 50 in the receiving cavity 41, and a sealing ring 51 is arranged between the pole 50 and the metal ring 40.

[0037] The pole 50 comprises an upper pole 51 and a lower pole 52, and the upper pole 51 and the lower pole 52 are split structures and are used together; the power terminal comprises a positive power terminal and a negative power terminal, and the materials of the upper pole and the lower pole of the positive power terminal are both aluminum; the material of the upper pole of the negative power terminal is aluminum, and the material of the lower pole is copper. The upper pole 51 comprises a bottom 53 and a convex part 54, and the diameter of the bottom 53 is larger than the diameter of the convex part 54; the upper plastic 30 and the metal ring 40 are both provided with a through hole 60, and the convex part 54 of the upper pole 51 is placed in the through hole of the upper plastic 30.

[0038] Compared with the traditional packaging structure, referring to Figure 4 , Figure 8As shown, the terminal position 3 of the traditional cover plate structure is in a half-open form, and when the electrical connection terminal is made, the components are installed from both sides of the cover plate structure respectively, and the components on both sides are fixed to form the whole electrical connection terminal by the series connector 4, and each electrical connection terminal component is fixed on the battery cover plate by injection molding, welding or riveting, and at the same time, this assembly method needs to fix the electrical connection terminal from the bottom of the cover plate structure, and the traditional packaging surface 5 is at the bottom, and the structure is complex and the operation is troublesome. The technical scheme of the present application can independently manufacture the electrical connection terminal and the cover plate structure, place the electrical connection terminal in the terminal position of the cover plate structure, and then combine and package the two, directly package on the end surface of the cover plate structure, and the packaging surface 6 of the present structure is on the top surface of the cover plate structure, and the processing is more simple and convenient; the separate independent manufacturing of the electrical connection terminal and the cover plate structure improves the fault tolerance rate between each component, and the manufacturing is more convenient and fast.

[0039] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application, and the illustrative description of the above terms in the specification does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Through the above description of the structure and principle, those skilled in the art should understand that the present application is not limited to the above specific embodiments, and improvements and substitutions of the technology known in the art based on the present application all fall within the protection scope of the present application, which should be defined by the claims.

Claims

1. A power battery cover assembly structure, characterized in that: It includes electrical terminals and cover plate structural components; The electrical terminal includes an upper plastic component, a metal ring, and a terminal post; The upper plastic is provided with an embedding groove, which surrounds the upper plastic; the metal ring has a housing cavity, the electrode is placed in the housing cavity, and the top of the metal ring is provided with a retaining ring, which is inserted into the embedding groove. The upper plastic and the metal ring are connected to encapsulate the electrode in the housing cavity. The cover plate structure includes a base plate and a lower insulating sheet; The lower insulating sheet is provided with an insert block, which protrudes from the end face of the lower insulating sheet; the substrate is provided with a snap-fit ​​hole, which corresponds to the position of the insert block; the top of the insert block has an outwardly protruding snap-fit ​​part, the end face of which is an inclined surface, and the insert block is snapped into the snap-fit ​​hole by the snap-fit ​​part, so as to assemble the substrate and the lower insulating sheet into a whole. The sidewall of the metal ring is provided with several locking holes, which penetrate the sidewall of the metal ring; The embedded channel is provided with a number of locking posts, which are connected to the locking holes.

2. The power battery cover assembly structure according to claim 1, characterized in that: A sealing ring is placed between the pole and the metal ring.

3. The power battery cover assembly structure according to claim 1, characterized in that: The electrode post includes an upper electrode post and a lower electrode post, and the upper electrode post and the lower electrode post are a split structure.

4. The power battery cover assembly structure according to claim 3, characterized in that: The upper pole post includes a bottom and a protrusion, wherein the diameter of the bottom is larger than the diameter of the protrusion.

5. The power battery cover assembly structure according to claim 4, characterized in that: Both the upper plastic and the metal ring are provided with perforations, and the protrusion of the upper pole post is placed at the perforation of the upper plastic.

6. The power battery cover assembly structure according to claim 1, characterized in that: The lower insulating sheet has a gap in the middle, and a bending elastic strip is provided in the gap.

7. The power battery cover assembly structure according to claim 1, characterized in that: The electrical terminals are circular or polygonal in shape.

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