Pole and connecting piece integrated structure

Abstract

The utility model belongs to the technical field of batteries, and mainly relates to a pole and connecting piece integrated structure which comprises a pole, a first plastic part, a body, a second plastic part and a connecting piece, the body is provided with an assembly hole, and the pole corresponds to the assembly hole and is arranged on one side of the body in the thickness direction through the first plastic part. The connecting sheet is assembled on the other side of the body in the thickness direction in an insulating manner through a second plastic part; the second plastic part is provided with a transition hole corresponding to the assembly hole, one surface of the second plastic part is provided with a concave part, the connecting piece is arranged in the concave part, and the pole sequentially penetrates through the assembly hole and the transition hole to be welded with the connecting piece into an integrated structure; according to the design, the splicing precision of the connecting piece and the second plastic part in an existing battery top cover structure is improved, meanwhile, the tightness degree of connection of the second plastic part, the body and the pole column structure in the top cover structure is improved, and the situation that the interior of the battery top cover rotates and is damaged under the action of external force is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and particularly relates to an integrated structure of a pole and a connecting piece. Background Art

[0002] The development of electric vehicles is driving stringent performance requirements for energy storage batteries. Due to their high energy density, high operating voltage, and long lifespan, energy storage batteries are widely used in various fields. However, structural issues still exist, such as low positioning accuracy between the connecting piece and the second plastic component, and insufficient tightness between the main body and the second plastic component. These issues can easily cause the battery cover to rotate and detach under stress, affecting assembly efficiency and welding yield, and reducing overall product quality.

[0003] To enhance the stability of the battery structure, laser welding is commonly used in existing technologies to securely connect the connecting tab to the terminal post on the battery cover. However, existing technologies have not fully addressed the positioning issues between the terminal tab and the second plastic component, nor the tightness of the assembly between the battery body and the second plastic component. These improvements are achieved solely through structural improvements to the connecting tab or the terminal post.

[0004] Based on this, it is urgent to improve the existing top cover structure to solve the defects of the above-mentioned technology. Utility Model Content

[0005] The purpose of this utility model is to:

[0006] In view of the existing top cover structure, the present invention proposes an integrated structure of a pole and a connecting piece, aiming to solve the problems of low positioning accuracy of the connecting piece and the second plastic part and insufficient installation tightness between the main body and the second plastic part in the existing top cover structure.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] A pole and connecting piece integrated structure, comprising a pole, a first plastic part, a body, a second plastic part, and a connecting piece. The body has an assembly hole. The pole corresponds to the assembly hole and is arranged on one side of the body in the thickness direction through the first plastic part. The connecting piece is insulated and assembled on the other side of the body in the thickness direction through the second plastic part.

[0009] The second plastic part has a transition hole corresponding to the assembly hole. A surface of the second plastic part has a recess. The connecting piece is placed in the recess. The pole passes through the assembly hole, the transition hole and the connecting piece in sequence and is welded to form an integrated structure.

[0010] The beneficial effects of the above technical solution of the utility model are:

[0011] By adopting the above technical solution, the integrated structure of the terminal and connecting piece in this utility model achieves a stable connection between the terminal and the connecting piece, while also improving the positioning accuracy between the connecting piece and the second plastic component, as well as the tightness of the installation between the main body and the second plastic component. This structure effectively prevents the battery top cover from rotating and detaching due to stress, improving assembly efficiency and welding yield, thereby enhancing overall product quality.

[0012] As an improvement to the integrated structure of the pole and the connecting piece of the present invention, the connecting piece is a sheet-like structure and matches the recessed structure.

[0013] As an improvement to the integrated structure of the pole and connecting piece of the present invention, the main body includes a main body and a concave portion provided on the main body, and a convex portion is provided on the other surface of the second plastic part at a position corresponding to the concave portion; the convex portion is correspondingly accommodated in the concave portion.

[0014] As an improvement to the integrated structure of the pole and the connecting piece of the present invention, the pole includes a column body and a welding body connected to the end face of the column body, and the welding body is welded to the connecting piece.

[0015] As an improvement to the integrated structure of the pole and connecting piece of the present invention, the first plastic part includes a first plastic body and a mounting hole formed by the first plastic body. The column is arranged in the mounting hole. The first plastic body has a first chamfer, and the column has a second chamfer. The second chamfer is installed corresponding to the first chamfer.

[0016] As an improvement to the integrated structure of the pole and the connecting piece of the present invention, a plurality of positioning pins are provided on the edge of the mounting hole for matching with positioning holes provided on the edge of the transition hole.

[0017] As an improvement to the integrated structure of the pole and the connecting piece of the present invention, the pole body is made of aluminum, and the welding body is made of copper for laser welding with the connecting piece.

[0018] As an improvement to the integrated structure of the pole and the connecting piece of the present invention, an insulator is further provided between the assembly hole and the connection point of the first plastic component.

[0019] As an improvement to the integrated structure of the pole and the connecting piece of the present invention, the main body is provided with an explosion-proof valve hole beside the assembly hole, and an explosion-proof valve assembly is provided in the explosion-proof valve hole.

[0020] As an improvement to the integrated structure of the pole and the connecting piece of the present invention, a liquid injection valve and a liquid injection hole for assembling the liquid injection valve are further provided on a side of the main body away from the second plastic part. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 This is a schematic structural diagram of implementation mode 1 of the present invention;

[0023] Figure 2 This is one of the exploded structural diagrams of implementation mode 1 of the present invention;

[0024] Figure 3 This is the second schematic diagram of the decomposed structure of the first embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the exploded structure of the pole and the connecting piece in embodiment 1 of the present invention;

[0026] Figure 5 This is a schematic diagram of the assembly of the pole and the first plastic part in embodiment 2 of the present invention;

[0027] Figure 6 This is a schematic diagram of the assembly of the first plastic part and the main body in embodiment 2 of the present invention;

[0028] Figure 7 This is a side view of the integrated structure of the pole and the connecting piece according to Embodiment 3 of the present invention;

[0029] Figure 8 for Figure 7 Cross-section of the middle AA;

[0030] Figure 9 for Figure 8 Enlarged view of point B in the middle;

[0031] in:

[0032] 1-pole;

[0033] 11- column;

[0034] 111- second chamfer;

[0035] 12-welded body;

[0036] 2-first plastic part;

[0037] 21-first plastic body;

[0038] 211-first chamfer;

[0039] 22-Mounting hole;

[0040] 221- positioning pin;

[0041] 3-Ontology;

[0042] 31-assembly hole;

[0043] 32-concave matching portion;

[0044] 33-explosion-proof valve hole;

[0045] 34-explosion-proof valve assembly;

[0046] 35- injection valve;

[0047] 36- injection hole;

[0048] 4-second plastic part;

[0049] 41-transition hole;

[0050] 411- positioning hole;

[0051] 42-concave;

[0052] 43-convex part;

[0053] 5-connecting piece;

[0054] 6-Insulator. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0056] In the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0057] Although the present application is disclosed as above in terms of a preferred embodiment, it is not intended to limit the claims. Any person skilled in the art may make several possible changes and modifications without departing from the concept of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

[0058] The present invention will be described in further detail below in conjunction with specific implementation methods, but the implementation methods of the present invention are not limited thereto.

[0059] Implementation Method 1

[0060] like Figure 1-4 The illustrated embodiment shows an integrated structure of a pole and connecting piece, comprising a pole 1, a first plastic component 2, a body 3, a second plastic component 4, and a connecting piece 5. The body 3 has an assembly hole 31. The pole 1 corresponds to the assembly hole 31 and is disposed on one side of the body 3 in the thickness direction through the first plastic component 2. The connecting piece 5 is insulated and assembled to the other side of the body 3 in the thickness direction through the second plastic component 4.

[0061] The second plastic part 4 has a transition hole 41 corresponding to the assembly hole 31. A surface of the second plastic part 4 has a recess 42. The connecting piece 5 is placed in the recess 42. The pole 1 passes through the assembly hole 31 and the transition hole 41 in sequence and is welded to the connecting piece 5 to form an integrated structure.

[0062] Specifically, in this embodiment, by adopting the above-mentioned technical solution, the pole 1 and the connecting piece 5 are welded into an integral structure, achieving a stable connection between the pole 1 and the connecting piece 5, and improving the stability and reliability of the overall structure. At the same time, the provision of the first plastic part 2 and the second plastic part 4 enables the pole 1 and the connecting piece 5 to be insulated and assembled with the body 3, respectively, thereby ensuring the safety of the battery. More importantly, the recess 42 in the second plastic part 4 is designed to be consistent with the shape of the connecting piece 5, so that the connecting piece 5 can be fully embedded therein, thereby ensuring the stability and precision of the pole 1 and the connecting piece 5 during the welding process. This design not only improves the efficiency and yield of welding, but also effectively prevents battery performance degradation or failure caused by improper welding.

[0063] Furthermore, the presence of the recess 42 strengthens the connection between the connecting piece 5 and the second plastic component 4, thereby further enhancing the stability and safety of the overall structure. Furthermore, as a further improvement to the present invention, the connection between the connecting piece 5 and the recess 42 can also employ a special fixing structure or material to enhance the reliability and durability of the connection. For example, the contact surface between the connecting piece 5 and the recess 42 can be provided with small protrusions or grooves to increase the contact area and friction, thereby preventing the connecting piece 5 from loosening or falling off during use.

[0064] While this embodiment describes only a specific integrated structure of the electrode 1 and the connecting piece 5, depending on actual needs and application scenarios, further improvements can be made to the structure of the connecting piece 5 and the second plastic part 4 based on this application, while improving the stability of the connection between the connecting piece 5 and the second plastic part 4 and reducing internal rotation between the connecting piece 5 and the second plastic part 4 under external forces. For example, the shape, size, and material of the connecting piece 5 can be modified to accommodate different battery types and charging requirements; the thickness and hardness of the second plastic part 4 can also be adjusted to meet different product specifications and performance requirements. These improvements will be made without departing from the basic concepts and principles of this utility model and, therefore, remain within the scope of protection of this utility model.

[0065] By adopting the above technical solutions and improvement measures, the integrated structure of the pole 1 and the connecting piece 5 of the present invention not only achieves a stable connection and insulation assembly, but also improves welding efficiency and yield, thereby enhancing overall product quality and safety.

[0066] Furthermore, the connecting piece 5 is a sheet-like structure and matches the structure of the recess 42. This design enables the connecting piece 5 to fit completely within the recess 42, further enhancing the stability and reliability of the connection.

[0067] Furthermore, the body 3 includes a main body and a recessed mating portion 32 disposed therein. A protrusion 43 is disposed on the other surface of the second plastic component 4 at a position corresponding to the recessed portion 42; the protrusion 43 is received in the recessed mating portion 32. This design, through the cooperation of the protrusion 43 and the recessed mating portion 32, achieves precise positioning and a tight connection between the second plastic component 4 and the body 3, improving overall assembly accuracy and stability.

[0068] Furthermore, an insulator 6 is provided between the assembly hole 31 and the connection between the first plastic part 2. This design further enhances the insulation performance between the pole 1 and the body 3, thereby improving the safety of the battery.

[0069] Implementation Method 2

[0070] Different from the first embodiment, Figure 5-6As shown, in order to further improve the stability of the present invention, the first plastic part 2 also includes a first plastic body 21 and a mounting hole 22 formed by the first plastic body 21. The column 11 is arranged in the mounting hole 22. The first plastic body 21 has a first chamfer 211, and the column 11 has a second chamfer 111. The second chamfer 111 is installed corresponding to the first chamfer 211. This design allows the column 11 to be smoothly inserted into the mounting hole 22, and the cooperation of the first chamfer 211 and the second chamfer 111 can reduce the resistance during insertion and improve assembly efficiency. More importantly, by providing the first chamfer 211 and the second chamfer 111, the integrated structure of the present invention will not have the problem of internal rotation when subjected to external force, thereby preventing the pole 1 from rotating internally under the action of external force, thereby destroying the strength of the welding between the pole 1 and the connecting piece 5 and affecting the performance of the entire top cover.

[0071] Furthermore, the edge of the mounting hole 22 is provided with a plurality of positioning pins 221 for mating with positioning holes 411 provided on the edge of the transition hole 41. This design, through the cooperation of the positioning pins 221 and the positioning holes 411, achieves precise positioning and connection between the first plastic part 2 and the second plastic part 4, improving the overall assembly accuracy and stability. In specific embodiments, different numbers of positioning pins 221 and positioning holes 411 can be selected according to actual needs to achieve optimal positioning and connection effects.

[0072] At the same time, the first plastic body 21 and the second plastic part 4 can be made of the same material, such as thermoplastic or thermosetting plastic, to ensure good compatibility and stability between the two. This material selection not only has good insulation properties but can also withstand certain mechanical and thermal stresses, ensuring the stability and reliability of the overall structure.

[0073] In summary, this embodiment improves the connection between the first and second plastic parts 2, 4, and the structure of the terminal 1 and the connecting piece 5, further enhancing the stability and reliability of the overall structure while also improving assembly and welding efficiency. This improvement is not only applicable to different battery types and charging requirements, but also meets higher performance and safety requirements.

[0074] Other details that are the same as those in Implementation 1 will not be described in detail in this implementation.

[0075] Implementation 3

[0076] Different from the first embodiment, Figure 3-9As shown, in this embodiment, the pole 1 includes a column 11 and a welding body 12 connected to the end surface of the column 11. The welding body 12 is welded to the connecting piece 5. This design enables the welding body 12 to be welded to the connecting piece 5, thereby achieving a stable connection between the pole 1 and the connecting piece 5. At the same time, the column 11, as the main body of the pole 1, cooperates with the first plastic part 2 to achieve an insulated assembly between the pole 1 and the body 3.

[0077] Furthermore, the column 11 is made of aluminum, and the welding body 12 is made of copper for laser welding with the connecting piece 5. This design combines the advantages of aluminum and copper, ensuring the conductivity of the pole 1 and achieving a stable welding with the connecting piece 5.

[0078] like Figure 7 The side view of the integrated structure of the pole 1 and the connecting piece 5 in this embodiment is shown as follows. Figure 8 The cross-sectional view and its partial enlarged view shown - Figure 9 As can be seen, in this embodiment, the terminal 1 and the connecting piece 5 are tightly connected. Specifically, the connecting piece 5 is tightly attached to the welding body 12 on the end face of the column 11. Through laser welding, a strong weld is formed between the welding body 12 and the connecting piece 5. This welding method not only ensures the strength and stability of the weld, but also makes the connection between the terminal 1 and the connecting piece 5 tighter, effectively preventing battery performance degradation or failure caused by improper welding.

[0079] Furthermore, to further improve welding efficiency and yield, the contact surface between the welding body 12 and the connecting piece 5 can be specially treated. For example, a thin layer of flux can be applied to the contact surface to improve the wettability and fluidity of the welding process, thereby ensuring uniformity and stability of the welding. Furthermore, during the welding process, appropriate welding parameters and welding speeds can be used to ensure welding quality and efficiency.

[0080] In summary, this embodiment further enhances the stability and reliability of the integrated structure of the electrode 1 and the connecting piece 5 by improving the welding method and optimizing the structural design. This improvement not only improves the performance and safety of the battery, but also makes the battery production process more efficient and reliable. Furthermore, this embodiment fully considers the application scenarios of different battery types and charging requirements, making this integrated structure have a wider range of application prospects.

[0081] In a specific embodiment, considering that welding the copper connecting piece 5 is usually easy and the welding effect is stable, which can ensure the reliability and long-term stability of the connection, the connecting piece 5 is generally made of copper. In this embodiment, considering that copper is a conductive material with very low resistivity, the use of the copper connecting piece 5 and the copper pole 1 can ensure efficient transmission of current at the connection, reduce energy loss, and improve the overall electrical performance of the battery, so the welding body 12 of the pole 1 is designed to be made of copper.

[0082] Other details that are the same as those in Implementation 1 will not be described in detail in this implementation.

[0083] Implementation 4

[0084] Different from the first embodiment, Figure 2 To further enhance the performance of the present invention, in this embodiment, the body 3 is provided with an explosion-proof valve hole 33 adjacent to the assembly hole 31, and an explosion-proof valve assembly 34 is disposed within the explosion-proof valve hole 33. This design, through the provision of the explosion-proof valve assembly 34, automatically opens when the internal pressure of the battery is too high, releasing the internal pressure and preventing safety accidents such as battery explosion.

[0085] The side of the body 3 away from the second plastic part 4 is further provided with a liquid injection valve 35 and a liquid injection hole 36 for assembling the liquid injection valve 35. This design allows the battery to be injected through the liquid injection valve 35 during assembly, which is convenient and quick.

[0086] In summary, the integrated structure of the terminal 1 and connecting piece 5 of the present invention, through the adoption of the above-mentioned technical solution, achieves a stable connection between the terminal 1 and the connecting piece 5, improving the stability and reliability of the overall structure while ensuring battery safety. This structure has the advantages of high assembly precision, high welding yield, and high product quality, and is suitable for various types of battery products.

[0087] Other details that are the same as those in Implementation 1 will not be described in detail in this implementation.

[0088] The above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A structure of an integrated pole and connecting piece, characterized in that: The invention comprises a pole (1), a first plastic part (2), a body (3), a second plastic part (4) and a connecting piece (5); the body (3) has an assembly hole (31); the pole (1) corresponds to the assembly hole (31) and is arranged on one side of the body (3) in the thickness direction through the first plastic part (2); and the connecting piece (5) is insulated and assembled on the other side of the body (3) in the thickness direction through the second plastic part (4); The second plastic part (4) has a transition hole (41) corresponding to the assembly hole (31), a surface of the second plastic part (4) has a recess (42), the connecting piece (5) is placed in the recess (42), and the pole (1) passes through the assembly hole (31), the transition hole (41) and the connecting piece (5) in sequence and is welded to form an integrated structure.

2. The integrated structure of the pole and the connecting piece according to claim 1, characterized in that: The connecting sheet (5) is a sheet-like structure and matches the structure of the recess (42).

3. The integrated structure of the pole and the connecting piece according to claim 1, characterized in that: The main body comprises a main body (3) and a concave matching portion (32) arranged on the main body (3); a convex portion (43) is arranged on the other surface of the second plastic part (4) at a position corresponding to the concave portion (42); the convex portion (43) is correspondingly accommodated in the concave matching portion (32).

4. The integrated structure of the pole and the connecting piece according to claim 1, characterized in that: The pole (1) comprises a column (11) and a welding body (12) connected to the end face of the column (11), and the welding body (12) is welded to the connecting piece (5).

5. The integrated structure of the pole and the connecting piece according to claim 4, characterized in that: The first plastic part (2) comprises a first plastic body (21) and a mounting hole (22) formed by the first plastic body (21); the column (11) is arranged in the mounting hole (22); the first plastic body (21) has a first chamfer (211); the column (11) has a second chamfer (111); and the second chamfer (111) is mounted corresponding to the first chamfer (211).

6. The integrated structure of the pole and the connecting piece according to claim 5, characterized in that: The edge of the mounting hole (22) is provided with a plurality of positioning pins (221) for matching with positioning holes (411) provided at the edge of the transition hole (41).

7. The integrated structure of the pole and the connecting piece according to claim 4, characterized in that: The column (11) is made of aluminum, and the welding body (12) is made of copper for laser welding with the connecting piece.

8. The integrated structure of the pole and the connecting piece according to claim 1, characterized in that: An insulator (6) is also provided between the connection between the assembly hole (31) and the first plastic part (2).

9. The integrated structure of the pole and the connecting piece according to claim 1, characterized in that: The body (3) is provided with an explosion-proof valve hole (33) beside the assembly hole (31), and an explosion-proof valve assembly (34) is provided in the explosion-proof valve hole (33).

10. The integrated structure of a pole and a connecting piece according to claim 1, characterized in that: A liquid injection valve (35) and a liquid injection hole (36) for assembling the liquid injection valve (35) are also provided on a side of the body (3) away from the second plastic part (4).

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