Copper bar connecting structure and electric equipment

Abstract

The utility model discloses a copper bar connecting structure and electric equipment, the copper bar connecting structure comprises a first copper bar assembly and a second copper bar assembly which extend along a first direction, and a third copper bar assembly and a fourth copper bar assembly which extend along a second direction, and the first direction and the second direction intersect; a first dovetail groove is formed in the first copper bar assembly, and a second dovetail groove is formed in the second copper bar assembly; a first assembling part matched with the first dovetail groove is arranged at one end, in the second direction, of the third copper bar assembly, and a second assembling part matched with the second dovetail groove is arranged at one end, in the second direction, of the fourth copper bar assembly; the embedded connection of the dovetail groove does not increase the thickness of the joint of the copper bar assembly, the assembly is convenient and firm, and the conductive performance is prevented from being affected.

Description

Technical Field

[0001] The present application relates to the technical field of connection structures, and in particular to a copper busbar connection structure and electrical equipment. Background Art

[0002] Copper busbar is the core material of power transmission. It is made of pure copper (red copper) and is often used for high current and high voltage power transmission. Due to its excellent conductivity, good mechanical properties, good heat dissipation, corrosion resistance and oxidation resistance, it can improve the efficiency of power transmission and ensure the normal operation and safety of equipment. Therefore, it is widely used in electric vehicles, energy storage systems, communication equipment and other fields.

[0003] The copper busbar connection products currently known in the market have problems such as easy deviation during welding between the copper busbars, unstable welding and increased overall thickness, which affects the conductive performance.

[0004] Therefore, the current technology still needs to be improved and enhanced. Utility Model Content

[0005] The present application provides a copper busbar connection structure, which can effectively alleviate the problem of poor conductivity caused by the welding between the copper busbars being easily misaligned, unstable, and having an increased overall thickness.

[0006] The present application provides a copper bar connection structure, comprising a first copper bar assembly and a second copper bar assembly extending along a first direction, and a third copper bar assembly and a fourth copper bar assembly extending along a second direction, wherein the first direction and the second direction intersect;

[0007] A first dovetail groove is provided in the first copper bar assembly, and a second dovetail groove is provided in the second copper bar assembly; a first assembly portion adapted to the first dovetail groove is provided at one end of the third copper bar assembly along the second direction, and a second assembly portion adapted to the second dovetail groove is provided at one end of the fourth copper bar assembly along the second direction.

[0008] In some embodiments of the copper busbar connection structure, the first direction is perpendicular to the second direction;

[0009] The first copper bar assembly has a first end and a second end relative to each other along a first direction, the first end is provided with a first connecting portion, and the second end is provided with a second connecting portion;

[0010] The second copper bar assembly has a third end and a fourth end opposite to each other along the first direction, the third end is provided with a third connecting portion, and the fourth end is provided with a fourth connecting portion;

[0011] A fifth connection portion is disposed at the other end of the third copper bar assembly along the second direction, and a sixth connection portion is disposed at the other end of the fourth copper bar assembly along the second direction.

[0012] In the copper busbar connection structure of some embodiments, the first end and the second end are both bent, and the bending direction of the first end is consistent with the bending direction of the second end; the third end and the fourth end are both bent, and the bending direction of the third end is consistent with the bending direction of the fourth end;

[0013] The first connecting portion is extended along the bending direction of the first end portion; the second connecting portion is extended along the bending direction of the second end portion;

[0014] The third connection portion is extended along the bending direction of the third end portion; and the fourth connection portion is extended along the bending direction of the fourth end portion.

[0015] In the copper bar connection structure of some embodiments, the other end of the third copper bar assembly and the other end of the fourth copper bar assembly are both bent, and the other end of the third copper bar assembly has the same bending direction as the other end of the fourth copper bar assembly;

[0016] The fifth connection portion and the other end of the third copper busbar assembly are in a bent shape, and the sixth connection portion and the other end of the fourth copper busbar assembly are in a bent shape.

[0017] In the copper busbar connection structure in some embodiments, the bending direction between the fifth connection portion and the other end of the third copper busbar assembly is the same as the bending direction between the sixth connection portion and the other end of the fourth copper busbar assembly.

[0018] In the copper bar connection structure of some embodiments, the first copper bar assembly has a first protrusion, and a first dovetail groove is provided in the first protrusion;

[0019] The second copper bar assembly is provided with a second protrusion, and a second dovetail groove is provided in the second protrusion.

[0020] In the copper busbar connection structure of some embodiments, the protruding direction of the first protrusion is the same as the protruding direction of the second protrusion, and the first protrusion and the second protrusion are staggered along the corresponding protruding directions.

[0021] In the copper busbar connection structure of some embodiments, the first protrusion and the second protrusion are staggered in the first direction.

[0022] In the copper busbar connection structure in some embodiments, the first connection part, the second connection part, the third connection part, the fourth connection part, the fifth connection part and the sixth connection part are all provided with through holes.

[0023] The embodiment of the present application also provides an electrical device, including a battery pack assembly, a battery connector, a first drive board assembly, a second drive board assembly, and a copper busbar connection structure as described above; the battery connector is arranged on the battery pack assembly, and the first drive board assembly and the second drive board assembly are respectively located on opposite sides of the battery pack assembly;

[0024] The copper busbar connection structure is used to connect with the battery connector, the first drive board assembly and the second drive board assembly, and transmit electrical energy to the first drive board assembly and the second drive board assembly.

[0025] The present application provides a copper busbar connection structure and electrical equipment, wherein the copper busbar connection structure includes a plurality of copper busbar assemblies, and the connection of the copper busbar assemblies in a first direction and a second direction is performed by positioning welding through a dovetail groove, which can save overlapping positioning jigs, is simple and convenient to assemble, and has a more reliable structure; at the same time, the embedded connection using the dovetail groove will not increase the thickness of the connection of the copper busbar assembly, thereby avoiding affecting the conductive performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0027] Figure 1 A schematic diagram of the structure of the copper busbar connection structure provided in an embodiment of the present application.

[0028] Figure 2 A schematic structural diagram of a first copper busbar assembly and a second copper busbar assembly in a copper busbar connection structure provided in an embodiment of the present application.

[0029] Figure 3 This is a schematic structural diagram of the third copper busbar assembly and the fourth copper busbar assembly in the copper busbar connection structure provided in an embodiment of the present application.

[0030] Figure 4 A side schematic diagram of a first copper busbar assembly and a second copper busbar assembly in a copper busbar connection structure provided in an embodiment of the present application.

[0031] Figure 5 Provided in the embodiments of this application Figure 4 A partial enlarged view of point A in the middle.

[0032] Figure 6 Provided in the embodiments of this application Figure 4 A partial enlarged view of point B in the middle.

[0033] Figure 7 A side schematic diagram of a third copper busbar assembly and a fourth copper busbar assembly in the copper busbar connection structure provided in an embodiment of the present application.

[0034] Figure 8 Provided in the embodiments of this application Figure 7 A partial enlarged view of point C in the middle.

[0035] Fig. 9 Provided in the embodiments of this application Figure 7 A partial enlarged view of point D in the middle.

[0036] Fig.10 A connection diagram of the copper busbar connection structure provided in an embodiment of the present application.

[0037] Reference numerals:

[0038] 10, first copper bar assembly; 20, second copper bar assembly; 30, third copper bar assembly; 40, fourth copper bar assembly;

[0039] 11. first dovetail groove; 21. second dovetail groove; 41. first assembly portion; 42. second assembly portion; 51. first end portion; 52. second end portion; 53. third end portion; 54. fourth end portion; 61. first connection portion; 62. second connection portion; 63. third connection portion; 64. fourth connection portion; 65. fifth connection portion; 66. sixth connection portion; 71. first protrusion portion; 72. second protrusion portion; 80. insulating layer;

[0040] 100, battery pack assembly; 110, battery connector; 200, first drive board assembly; 300, second drive board assembly; 400, copper busbar connection structure. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 those skilled in the art without creative work are within the scope of protection of the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. The features specified as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0043] Please also read Figure 1 , Figure 2 and Figure 3 This embodiment provides a copper bar connection structure, which includes a first copper bar assembly 10, a second copper bar assembly 20, a third copper bar assembly 30 and a fourth copper bar assembly 40. The first copper bar assembly 10 and the second copper bar assembly 20 extend along a first direction; the third copper bar assembly 30 and the fourth copper bar assembly 40 extend along a second direction; wherein the first direction intersects with the second direction.

[0044] Among them, the first copper bar assembly 10 is provided with a first dovetail groove 11, and the second copper bar assembly 20 is provided with a second dovetail groove 21; the third copper bar assembly 30 is provided with a first assembly part 41 adapted to the first dovetail groove 11 at one end along the second direction, and the fourth copper bar assembly 40 is provided with a second assembly part 42 adapted to the second dovetail groove 21 at one end along the second direction; in this embodiment, a plurality of copper bar assemblies are arranged to form a copper bar connection structure, and the connection of the copper bar assemblies between the first direction and the second direction is positioned and welded by the dovetail groove, which can save overlap positioning jigs, and the assembly is simple and convenient, and the structure is more reliable; at the same time, the embedded connection using the dovetail groove will not increase the thickness of the connection of the copper bar assembly, thereby avoiding affecting the conductive performance.

[0045] In some embodiments, the first copper bar assembly 10 has a relative first end 51 and a second end 52 along the first direction, the first end 51 is provided with a first connecting portion 61, and the second end 52 is provided with a second connecting portion 62; the second copper bar assembly 20 has a relative third end 53 and a fourth end 54 along the first direction, the third end 53 is provided with a third connecting portion 63, and the fourth end 54 is provided with a fourth connecting portion 64; the third copper bar assembly 30 is provided with a fifth connecting portion 65 at the other end along the second direction, and the fourth copper bar assembly 40 is provided with a sixth connecting portion 66 at the other end along the second direction.

[0046] In this embodiment, the connection between the copper bar assembly in the first direction and the copper bar assembly in the second direction can be set near the middle of the first copper bar assembly 10 and the second copper bar assembly 20, so that the entire copper bar connection structure forms a connection structure similar to a T-shaped structure, then the two opposite ends of the first copper bar assembly 10 and the second copper bar assembly 20 can form a connection point, and the other end of the third copper bar assembly 30 and the other end of the fourth copper bar assembly 40 can also have the same connection point. Specifically, the first connection part 61 and the third connection part 63 form a group of connection points, the second connection part 62 and the fourth connection part 64 form a group of connection points, and the fifth connection part 65 and the sixth connection part 66 form a group of connection points, thereby making the copper bar connection structure form a multi-point connection design, which can realize the connection between the battery and a group of driving components when applied to actual products, thereby ensuring the efficiency of power transmission and meeting the driving requirements of the product.

[0047] In some embodiments, the first end 51 and the second end 52 are both bent, and the bending direction of the first end 51 is consistent with the bending direction of the second end 52; the third end 53 and the fourth end 54 are both bent, and the bending direction of the third end 53 is consistent with the bending direction of the fourth end 54; the first connecting portion 61 is extended along the bending direction of the first end 51; the second connecting portion 62 is extended along the bending direction of the second end 52; the third connecting portion 63 is extended along the bending direction of the third end 53; the fourth connecting portion 64 is extended along the bending direction of the fourth end 54; in this embodiment, the ends of the first copper bar assembly 10 and the second copper bar assembly 20 are set to be bent and form a connecting portion, so as to adapt to the connection of the actual product structure, thereby improving the convenience of the copper bar connection structure.

[0048] In some embodiments, the other end of the third copper bar assembly 30 and the other end of the fourth copper bar assembly 40 are both bent, and the other end of the third copper bar assembly 30 has the same bending direction as the other end of the fourth copper bar assembly 40; the fifth connecting portion 65 and the other end of the third copper bar assembly 30 are bent, and the sixth connecting portion 66 and the other end of the fourth copper bar assembly 40 are bent; similarly, in this embodiment, the other end of the third copper bar assembly 30 and the other end of the fourth copper bar assembly 40 are both bent, and the fifth connecting portion 65 and the sixth connecting portion 66 are bent with the corresponding ends to facilitate the connection of the actual product structure.

[0049] As an embodiment, the fifth connection portion 65 in this embodiment serves as the positive electrode of the copper busbar connection structure, and the sixth connection portion 66 serves as the negative electrode of the copper busbar connection structure.

[0050] As an embodiment, the bending direction between the fifth connection portion 65 and the other end of the third copper bar assembly 30 is the same as the bending direction between the sixth connection portion 66 and the other end of the fourth copper bar assembly 40, that is, the fifth connection portion 65 and the sixth connection portion 66 can extend in the same direction to facilitate the assembly connection of the actual product.

[0051] Please continue reading Figure 2 In some embodiments, the first copper bar assembly 10 has a first protrusion 71, and the first dovetail groove 11 is arranged in the first protrusion 71; the second copper bar assembly 20 is provided with a second protrusion 72, and the second dovetail groove 21 is arranged in the second protrusion 72; in this embodiment, protrusions are respectively arranged on the first copper bar assembly 10 and the second copper bar assembly 20 for setting dovetail grooves, so as to change the overall shape of the copper bar assembly and adapt to the installation of actual products.

[0052] Please also read Figure 4 and Figure 5As an embodiment, the protruding direction of the first protrusion 71 is the same as the protruding direction of the second protrusion 72, and the first protrusion 71 and the second protrusion 72 are staggered along the corresponding protruding directions.

[0053] As another embodiment, the first protrusion 71 and the second protrusion 72 are staggered in the first direction.

[0054] As an embodiment, through holes are provided on the first connection part 61, the second connection part 62, the third connection part 63, the fourth connection part 64, the fifth connection part 65 and the sixth connection part 66. In this embodiment, the through holes can be used for locking connection with actual products, for example, screws are provided through the through holes for locking.

[0055] Please also read Figures 4 to 9 , wherein the first copper bar assembly 10, the second copper bar assembly 20, the third copper bar assembly 30 and the fourth copper bar assembly 40 in this embodiment are all provided with an insulating layer 80 at positions avoiding the first connecting portion 61, the second connecting portion 62, the third connecting portion 63, the fourth connecting portion 64, the fifth connecting portion 65, the sixth connecting portion 66, the first assembling portion 41, the second assembling portion 42, the first dovetail groove 11 and the second dovetail groove 21, and the insulating layer 80 can be a polyvinyl chloride insulating layer 80 with a withstand voltage greater than 2500V. The welding material between the first dovetail groove 11 and the first assembling portion 41 and the second dovetail groove 21 and the second assembling portion 42 can be a composite material formed by 50% copper and 50% silver.

[0056] See also Fig.10 The present application also provides an electrical device, which may be a smart kitchen electric heating product such as an induction cooker. The electrical device includes a battery pack assembly 100, a battery connector 110, a first drive board assembly 200, a second drive board assembly 300, and a copper busbar connection structure 400 as described above; the battery connector is disposed on the battery pack assembly, and the first drive board assembly 200 and the second drive board assembly 300 are respectively located on opposite sides of the battery pack assembly 100; the copper busbar connection structure 400 is used to connect with the battery connector 110, the first drive board assembly 200, and the second drive board assembly 300, and transmit electrical energy to the first drive board assembly 200 and the second drive board assembly 300.

[0057] In some embodiments, the first connection part and the third connection part in the copper busbar connection structure 400 are connected to the first drive board assembly 200, the second connection part and the fourth connection part are connected to the second drive board assembly 300, and the fifth connection part and the sixth connection part are connected to the battery connector 110, thereby transmitting the electric energy in the battery pack assembly 100 to the first drive board assembly 200 and the second drive board assembly 300 through the copper busbar connection structure 400, providing the required electric energy for the first drive board assembly 200 and the second drive board assembly 300. Since the copper busbar connection structure is described in detail above, it will not be repeated here.

[0058] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0059] The copper busbar connection structure provided in the embodiments of the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A copper busbar connection structure, characterized in that: It includes a first copper bar assembly and a second copper bar assembly extending along a first direction, and a third copper bar assembly and a fourth copper bar assembly extending along a second direction, wherein the first direction and the second direction intersect; The first copper bar assembly is provided with a first dovetail groove, and the second copper bar assembly is provided with a second dovetail groove; the third copper bar assembly is provided with a first assembly portion adapted to the first dovetail groove at one end along the second direction, and the fourth copper bar assembly is provided with a second assembly portion adapted to the second dovetail groove at one end along the second direction.

2. The copper busbar connection structure according to claim 1, characterized in that: The first direction is perpendicular to the second direction; The first copper bar assembly has a first end and a second end relative to each other along the first direction, the first end is provided with a first connecting portion, and the second end is provided with a second connecting portion; The second copper bar assembly has a third end and a fourth end opposite to each other along the first direction, the third end is provided with a third connecting portion, and the fourth end is provided with a fourth connecting portion; The other end of the third copper bar assembly along the second direction is provided with a fifth connection portion, and the other end of the fourth copper bar assembly along the second direction is provided with a sixth connection portion.

3. The copper busbar connection structure according to claim 2, characterized in that: The first end and the second end are both bent, and the bending direction of the first end is consistent with the bending direction of the second end; the third end and the fourth end are both bent, and the bending direction of the third end is consistent with the bending direction of the fourth end; The first connecting portion is extended along the bending direction of the first end portion; the second connecting portion is extended along the bending direction of the second end portion; The third connection portion is extended along the bending direction of the third end portion; and the fourth connection portion is extended along the bending direction of the fourth end portion.

4. The copper busbar connection structure according to claim 3, characterized in that: The other end of the third copper bar assembly and the other end of the fourth copper bar assembly are both bent, and the other end of the third copper bar assembly has the same bending direction as the other end of the fourth copper bar assembly; The fifth connection portion and the other end of the third copper busbar assembly are bent, and the sixth connection portion and the other end of the fourth copper busbar assembly are bent.

5. The copper busbar connection structure according to claim 4, characterized in that: The bending direction between the fifth connecting portion and the other end of the third copper busbar assembly is the same as the bending direction between the sixth connecting portion and the other end of the fourth copper busbar assembly.

6. The copper busbar connection structure according to any one of claims 2 to 5, characterized in that: The first copper bar assembly has a first protrusion, and the first dovetail groove is arranged in the first protrusion; The second copper busbar assembly is provided with a second protrusion, and the second dovetail groove is provided in the second protrusion.

7. The copper busbar connection structure according to claim 6, characterized in that: A protruding direction of the first protrusion is the same as a protruding direction of the second protrusion, and the first protrusion and the second protrusion are staggered along the corresponding protruding directions.

8. The copper busbar connection structure according to claim 6, characterized in that: The first protrusion and the second protrusion are staggered in the first direction.

9. The copper busbar connection structure according to claim 8, characterized in that: The first connection portion, the second connection portion, the third connection portion, the fourth connection portion, the fifth connection portion and the sixth connection portion are all provided with through holes.

10. An electrical device, characterized in that: It comprises a battery pack assembly, a battery connector, a first drive board assembly, a second drive board assembly and a copper busbar connection structure as claimed in any one of claims 1 to 9; the battery connector is arranged on the battery pack assembly, and the first drive board assembly and the second drive board assembly are respectively located on opposite sides of the battery pack assembly; The copper busbar connection structure is used to connect with the battery connector, the first drive board assembly and the second drive board assembly, and transmit electrical energy to the first drive board assembly and the second drive board assembly.

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