Bus and energy storage equipment

Abstract

The utility model discloses a bus and an energy storage device, and belongs to the technical field of electrical connection.The bus comprises a conductive body; the connecting assembly is arranged on the conductive body, and the connecting assembly comprises a first switching part; the first insulating film is attached to the conductive body, and the first switching part penetrates through the first insulating film in the direction away from the conductive body; the insulating plate is attached to the first insulating film, the insulating plate is provided with a mounting hole, and the first switching part is inserted into the mounting hole and is connected with the insulating plate; the insulating plate is connected with the first insulating film and also connected with the first switching part, double fixation of the insulating plate is achieved, meanwhile, the first switching part and the mounting hole are matched in an inserted mode, the tightness between the first switching part and the insulating plate is improved, relative displacement between the first switching part and the insulating plate is limited, and the service life of the first switching part and the insulating plate is prolonged. Therefore, the connection reliability of the insulating plate is improved.

Description

Technical Field

[0001] This application belongs to the field of electrical connection technology, specifically relating to a busbar and energy storage device. Background Technology

[0002] Currently, simplified busbars are generally used to realize circuit connections in power electronic equipment. A simplified busbar is a type of busbar formed by pressing together a conductive metal plate and an insulating film.

[0003] To protect the outermost insulation film of the busbar from the effects of high temperatures and other environmental factors that cause it to turn black after being baked by high temperatures, an epoxy board is usually added outside the outermost insulation film of the busbar. However, due to limitations such as the installation space and thickness of the busbar, the conventional epoxy board connection structure can affect its connection reliability. Utility Model Content

[0004] Purpose of the utility model: The embodiments of this application provide a busbar that aims to solve the technical problem that the current epoxy board connection structure affects its connection reliability.

[0005] Technical solution: The busbar described in the embodiments of this application includes:

[0006] Conductive body;

[0007] A connecting component is disposed on the conductive body, the connecting component including a first adapter portion;

[0008] A first insulating film is attached to the conductive body, and the first transition portion penetrates the first insulating film in a direction away from the conductive body.

[0009] An insulating board is attached to the first insulating film. The insulating board has mounting holes, and the first adapter is inserted into the mounting holes and connected to the insulating board.

[0010] In some embodiments, the connecting component further includes a second adapter portion, the conductive body is provided with a locking hole, the second adapter portion is inserted into the locking hole and connected to the conductive body, and the first adapter portion is connected to the second adapter portion.

[0011] In some embodiments, the outer peripheral wall of the second adapter is provided with a notch, the conductive body includes a body portion and a protrusion, the body portion is provided with the locking hole, the protrusion is disposed in the locking hole and connected to the body portion, and the protrusion is adapted to the notch.

[0012] In some embodiments, the number of notches is provided as a plurality, and the plurality of notches are arranged at intervals along the outer periphery of the second transition portion, with each notch corresponding to a protrusion.

[0013] In some embodiments, at least a portion of the notch extends in an arc shape.

[0014] In some embodiments, the busbar further includes a second insulating film, which is attached to the conductive body on the side away from the first insulating film.

[0015] In some embodiments, the second adapter has a minimum dimension Lmm in the thickness direction perpendicular to the conductive body, and the diameter of the notch is dmm, satisfying: d≤L / 2.

[0016] In some embodiments, the shape of the first adapter is one of triangle, rectangle, circle, ellipse, star, and gear, and the mounting hole is adapted to the first adapter.

[0017] In some embodiments, the first insulating film is provided with a plurality of first clearance holes, and the insulating plate is provided with a plurality of second clearance holes, each of the second clearance holes being connected to one of the first clearance holes.

[0018] In some embodiments, the inner diameter of the second clearance hole is larger than the inner diameter of the first clearance hole, the insulating plate is provided with a connecting hole, and at least one second clearance hole communicates with its adjacent second clearance hole through the connecting hole.

[0019] Accordingly, the energy storage device described in this application embodiment includes the aforementioned busbar.

[0020] Beneficial effects: In the busbar embodiment of this application, the insulating plate is connected to both the first insulating film and the first adapter, thus achieving dual fixation of the insulating plate. At the same time, the insertion and engagement of the first adapter and the mounting hole improves the tightness between the first adapter and the insulating plate and limits the relative displacement between the two, thereby improving the reliability of the insulating plate connection.

[0021] The energy storage device in this application embodiment includes the busbar described above, and therefore can have all the technical features and beneficial effects of the busbar described above. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 An exploded view of the busbar provided in an embodiment of this application;

[0024] Figure 2A cross-sectional view of the busbar provided in an embodiment of this application;

[0025] Figure 3 A front view of the connection component provided in an embodiment of this application;

[0026] Figure 4 A schematic diagram of another structure of the first adapter provided in the embodiments of this application;

[0027] Figure 5 A front view of the busbar provided in an embodiment of this application;

[0028] Figure 6 A schematic diagram of the first clearance hole, the connecting hole, and the second clearance hole provided in an embodiment of this application;

[0029] Reference numerals: 1. Conductive body; 11. Body part; 110. Snap hole; 12. Protrusion; 2. Connecting assembly; 21. First adapter part; 22. Second adapter part; 221. Notch; 31. First insulating film; 311. First clearance hole; 32. Second insulating film; 4. Insulating plate; 41. Mounting hole; 42. Second clearance hole; 43. Connecting hole. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be understood that the terms "height," "thickness," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, an angle within the range of 85°-95° ​​is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, a completely parallel range within 10° is considered parallel.

[0032] As a prelude to the embodiments of this application, in order to protect the outermost insulating film of the busbar from the phenomenon of blackening after being baked by high temperature and other environmental factors, an epoxy board of the same size as the insulating film is added outside the outermost insulating film of the busbar. Due to the space limitations of the busbar installation location, the added epoxy board cannot be fixed with pan head screws, and because the epoxy board is relatively thin, it cannot be fixed with countersunk nuts. If glue or double-sided tape is used for fixing, the glue and double-sided tape are easily affected by the external high temperature, which will reduce the reliability of the fixation.

[0033] Please combine them together Figure 1 and Figure 2 The busbar in this embodiment includes a conductive body 1, a connecting component 2, a first insulating film 31, and an insulating plate 4. The connecting component 2 is disposed on the conductive body 1 and includes a first adapter portion 21. The first adapter portion 21 is made of insulating material and extends in a direction away from the conductive body 1, thereby forming a protruding structure protruding from the surface of the conductive body 1. The first insulating film 31 is attached to the conductive body 1, and the first insulating film 31 and the first adapter portion 21 are located on the same side of the conductive body 1. The first adapter portion 21 penetrates the first insulating film 31 in a direction away from the conductive body 1. The insulating plate 4 is attached to the first insulating film 31 and has a mounting hole 41. The first adapter portion 21 is inserted into the mounting hole 41 and connected to the insulating plate 4.

[0034] The conductive body 1 is plate-shaped or sheet-shaped and made of copper. It has two large surfaces arranged opposite each other. The first adapter 21 is disposed on one of the large surfaces, and its direction away from the conductive body 1 is parallel to the thickness direction of the conductive body 1. The first insulating film 31 can be connected to the conductive body 1 by hot pressing.

[0035] The connection between the insulating board 4 and the first insulating film 31 can be fixed with glue or double-sided tape. The connection between the first adapter 21 and the wall of the mounting hole 41 can be fixed with glue or double-sided tape, or with an interference fit, or a combination of interference fit and glue, or with a hot pressing process.

[0036] The insulating plate 4 is connected to both the first insulating film 31 and the first adapter 21, forming a dual fixing structure. The insertion and engagement of the first adapter 21 and the mounting hole 41 restricts the relative displacement between the two, thus improving the reliability of the fixing of the insulating plate 4.

[0037] Please combine them together Figure 1 and Figure 2In some embodiments, the connecting component 2 further includes a second adapter 22. The conductive body 1 has a through-hole 110 extending along its thickness direction. The second adapter 22 is inserted into the through-hole 110 and connected to the conductive body 1. The first adapter 21 is connected to the second adapter 22. The second adapter 22 increases the contact area between the first adapter 21 and the conductive body 1, which helps to improve the stability of the connection. At the same time, the second adapter 22 also separates the first adapter 21 from the conductive body 1. When a hot-pressing process is used to connect the second adapter 22 and the conductive body 1, the first adapter 21 can maintain its shape integrity to facilitate mating with the mounting hole 41. In other embodiments, the second adapter 22 can also be fixed with glue or double-sided tape, or it can be connected by an interference fit, or a combination of interference fit and glue.

[0038] Please refer to Figure 3 In some embodiments, the outer peripheral wall of the second adapter 22 is provided with a notch 221. The conductive body 1 includes a body portion 11 and a protrusion 12. The body portion 11 is provided with a locking hole 110. The protrusion 12 is disposed in the locking hole 110 and connected to the body portion 11. The protrusion 12 is adapted to the notch 221. The notch 221 is provided through the thickness direction of the second adapter 22, so that the outer peripheral wall of the second adapter 22 forms a concave structure, thereby making the outer peripheral contour of the second adapter 22 an irregular shape. The protrusion 12 is adapted to the locking hole 110, that is, the protrusion 12 is inserted into the locking hole 110. The hole wall of the locking hole 110 extends along the outer peripheral contour direction of the protrusion 12 and fits against it, thereby restricting the relative rotation between the second adapter 22 and the conductive body 1, which helps to increase the stability of the connection between them and provides a reliable basis for the connection between the first adapter 21 and the insulating plate 4.

[0039] Please refer to Figure 3 In some embodiments, multiple notches 221 are provided, and the multiple notches 221 are arranged at intervals along the outer periphery of the second transition portion 22, with each notch 221 corresponding to a protrusion 12. When the second transition portion 22 tends to rotate relative to the conductive body 1, the notch 221 is subjected to shear force. The multiple notches 221 can make the force on the second transition portion 22 uniform at various points, and also increase the outer contour area of ​​the second transition portion 22, which helps to stabilize the connection between the second transition portion 22 and the conductive body 1.

[0040] Please refer to Figure 3In some embodiments, at least a portion of the notch 221 extends in an arc shape. The arc shape of the notch 221 smooths the inner circumferential surface of its structure, reduces stress concentration, and facilitates the insertion of the second transition portion 22 into the mounting hole 41, reducing interference. In this embodiment, the entire inner contour surface of the notch 221 extends in an arc shape. In other embodiments, the inner contour surface of the notch 221 may adopt a combination shape that extends partly in an arc shape and partly in a linear shape.

[0041] In some embodiments, the busbar further includes a second insulating film 32, which is attached to the side of the conductive body 1 away from the first insulating film 31. The second insulating film 32 can be connected to the conductive body 1 by heat pressing, and it cooperates with the first insulating film 31 to jointly cover the surface of the conductive body 1. In other embodiments, the conductive body 1 can also be completely wrapped by the first insulating film 31 and then fixed by heat pressing.

[0042] Please refer to Figure 3 In some embodiments, the second transition portion 22 has a minimum dimension Lmm in the thickness direction perpendicular to the conductive body 1, and the diameter of the notch 221 is dmm, satisfying: d≤L / 2. By limiting the size of the notch 221, the diameter of the notch 221 is increased as much as possible while ensuring the strength of the insulating plate 4, thereby increasing the contact area between the insulating plate 4 and the conductive body 1, which is beneficial for a stable connection of the insulating plate 4. In this embodiment, the second transition portion 22 is circular, so its minimum dimension is its own diameter. When the shape of the second transition portion 22 has a clear distinction between the long and short sides, or is similar to an ellipse, limiting the diameter of the notch 221 can prevent the hollowed-out area of ​​the second transition portion 22 from being too large.

[0043] Please combine them together Figure 3 and Figure 4 In some embodiments, the first adapter 21 is shaped as a triangle, rectangle, circle, ellipse, star, or gear, and the mounting hole 41 is adapted to the first adapter 21. The shape of the first adapter 21 refers to the shape of the cross-section of the first adapter 21 perpendicular to the thickness direction of the conductive body 1, or the outer contour shape of the first adapter 21 projected onto the second adapter 22 along the thickness direction of the conductive body 1. In this embodiment, the first adapter 21 is gear-shaped, which increases its contact area with the insulating plate 4, thus limiting relative rotation and ensuring a stable connection.

[0044] Please combine them together Figure 5 and Figure 6In some embodiments, the first insulating film 31 is provided with a plurality of first clearance holes 311, and the insulating plate 4 is provided with a plurality of second clearance holes 42, each second clearance hole 42 being connected to a first clearance hole 311. The first clearance holes 311 and the second clearance holes 42 expose the conductive body 1 to facilitate connection of the conductive body 1.

[0045] Please combine them together Figure 5 and Figure 6 In some embodiments, the inner diameter of the second clearance hole 42 is larger than the inner diameter of the first clearance hole 311. The insulating plate 4 is provided with a connecting hole 43, and the width of the connecting hole 43 is smaller than the inner diameter of the first clearance hole 311. At least one second clearance hole 42 is connected to its adjacent second clearance hole 42 through the connecting hole 43. The connecting hole 43 and the corresponding second clearance holes 42 at both ends form an 8-shaped hole structure, which can maintain a large coverage area of ​​the first insulating film 31 while exposing the peripheral part of the first clearance hole 311. The first insulating film 31 ensures that the portion of the conductive body 1 exposed by the two first clearance holes 311 has a safe creepage distance when electrically connected.

[0046] In some embodiments, the insulating board 4 is made of epoxy board, which has high mechanical and dielectric properties, good heat and moisture resistance, and good machinability.

[0047] Accordingly, the energy storage device provided in this application includes the busbar of the above embodiments. Therefore, the energy storage device can have all the technical features and beneficial effects of the busbar, which will not be repeated here.

[0048] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0049] The busbars provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A busbar, characterized in that The busbar comprises: a conductive body (1); a connecting assembly (2) arranged on the conductive body (1), the connecting assembly (2) comprising a first adapter (21); a first insulating film (31) attached to the conductive body (1), the first adapter (21) penetrating the first insulating film (31) in a direction away from the conductive body (1); an insulating plate (4) attached to the first insulating film (31), the insulating plate (4) being provided with a mounting hole (41), the first adapter (21) being inserted into the mounting hole (41) and connected to the insulating plate (4).

2. The busbar of claim 1, wherein The connecting assembly (2) further comprises a second adapter (22), the conductive body (1) being provided with a clamping hole (110), the second adapter (22) being inserted into the clamping hole (110) and connected to the conductive body (1), and the first adapter (21) being connected to the second adapter (22).

3. The busbar of claim 2, wherein, The second adapter (22) is provided with a notch (221) around the periphery, the conductive body (1) comprising a body portion (11) and a protruding portion (12), the body portion (11) being provided with the clamping hole (110), the protruding portion (12) being arranged in the clamping hole (110) and connected to the body portion (11), and the protruding portion (12) being matched with the notch (221).

4. The busbar of claim 3, wherein, A plurality of notches (221) are arranged at intervals around the periphery of the second adapter (22), and each notch corresponds to one protruding portion.

5. The busbar of claim 3 or 4, characterized in that At least part of the notches (221) extend in an arc shape.

6. The busbar of claim 1, wherein The busbar further comprises a second insulating film (32) attached to a side of the conductive body (1) away from the first insulating film (31).

7. The busbar of claim 1, wherein The mounting hole (41) is matched with the first adapter (21).

8. The busbar of claim 1, wherein The first insulating film (31) is provided with a plurality of first avoiding holes (311), the insulating plate (4) is provided with a plurality of second avoiding holes (42), and each second avoiding hole (42) is connected to one first avoiding hole (311).

9. The busbar of claim 8, wherein, The inner diameter of the second avoiding hole (42) is greater than the inner diameter of the first avoiding hole (311), the insulating plate (4) is provided with a connecting hole (43), and at least one second avoiding hole (42) is connected to its adjacent second avoiding hole (42) through the connecting hole (43).

10. An energy storage device, characterized by, The busbar comprises the busbar according to any one of claims 1 to 9.

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