Busbar structure

Abstract

The utility model relates to the technical field of power distribution systems, and particularly discloses a Busbar structure, which comprises a first insulator, a first copper bar and a second copper bar, and is characterized in that the first copper bar comprises a first pin and a first plug pin, and a first connecting part of the first pin is inserted into the first insulator and is connected with the first plug pin in the first insulator; the second copper bar comprises a second pin and a second plug pin; a second connecting part of the second pin is inserted into the first insulator and is connected with the second plug pin in the first insulator; the first lead-out part of the first pin and the second lead-out part of the second pin are both located outside the first insulator and are spaced by an insulation distance a, the welding end of the first lead-out part and the welding end of the second lead-out part are located in the same face, the distance is a preset distance b, and b is larger than a. According to the structure, the distance b between the welding end of the first lead-out part and the welding end of the second lead-out part is larger than a, the problem of short circuit caused by silver ion migration is effectively solved, and damage to equipment can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution systems, in particular to a Busbar structure. Background Art

[0002] Busbar is a multi-layer composite structure connecting bar, also called composite busbar, which can be regarded as the highway of power distribution system. Compared with the traditional, bulky, time-consuming and troublesome wiring method, Busbar has the characteristics of easy design, low impedance, anti-interference, good reliability, space saving, simple and quick assembly, etc.

[0003] like Figure 1 As shown, in the prior art, the Busbar structure generally used for electrical connection of an integrated busbar is composed of a welding pin 100, an insulator 200, and a connector pin plug 300, wherein the free end of the pin is used for welding on a PCB circuit board, and the insulator 200 is injection molded around the pin. In the prior art, the welding pins are uniformly distributed and of equal length while ensuring the insulation distance.

[0004] Figure 2 In the prior art, the Busbar is connected to the circuit board. According to the design requirements, the insulation distance a must be ensured, otherwise the positive and negative electrodes will be short-circuited. However, since silver ions are required in the current welding process, silver ions will migrate over time during actual use, causing short circuits in the positive and negative pins and equipment damage.

[0005] Therefore, a Busbar structure is urgently needed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a Busbar structure to solve the problem that silver ions need to be used in the pin welding process in the related art, and silver ions will migrate over time, thereby causing short circuits between positive and negative pins and even damage to the equipment.

[0007] The utility model provides a Busbar structure, which includes:

[0008] a first insulator;

[0009] A first copper busbar, comprising a first pin and a first plug pin, wherein a first connecting portion of the first pin is inserted into the first insulator and connected to the first plug pin in the first insulator;

[0010] A second copper busbar includes a second pin and a second plug pin, wherein a second connecting portion of the second pin is inserted into the first insulator and connected to the second plug pin in the first insulator;

[0011] The first lead portion of the first pin and the second lead portion of the second pin are both located outside the first insulator and are separated from each other by an insulation distance a. The welding end of the first lead portion and the welding end of the second lead portion are located in the same plane and are separated by a preset distance b, b>a.

[0012] As a preferred technical solution of the Busbar structure, the first connecting portion and the first lead-out portion form a preset angle r, the second connecting portion and the second lead-out portion form a preset angle r, the first connecting portion and the second connecting portion are located in the same plane, the first lead-out portion and the second lead-out portion are located in the same plane, and r<180°;

[0013] The length of the first lead portion is different from the length of the second lead portion.

[0014] As a preferred technical solution of the Busbar structure, the first connecting portion and the first lead-out portion form a preset angle r, the second connecting portion and the second lead-out portion form a preset angle r, the first connecting portion and the second connecting portion are respectively located in two planes parallel to each other along the length direction of the first lead-out portion, the first lead-out portion and the second lead-out portion are located in the same plane, r=90°;

[0015] The length of the first lead-out portion is the same as the length of the second lead-out portion.

[0016] As a preferred technical solution of the Busbar structure, it also includes a second insulator, wherein the second insulator covers the connection between the first lead-out portion and the first connecting portion, and the second insulator covers the connection between the second lead-out portion and the second connecting portion.

[0017] As a preferred technical solution of the Busbar structure, the first insulator and the second insulator are integrally formed injection molded parts.

[0018] As a preferred technical solution of the Busbar structure, at least two first copper bars are provided, and the first pins of two adjacent first copper bars are spaced apart from each other by a preset distance c, where c≥a.

[0019] As a preferred technical solution of the busbar structure, the cross-sections of the first pin and the second pin are both flat-mouthed, and the cross-sections of the first plug pin and the second plug pin are both circular.

[0020] As a preferred technical solution of the Busbar structure, the first copper busbar further includes a first connector, and the first connector connects the first connecting portion and the first plug pin;

[0021] The second copper busbar further includes a second connecting member, and the second connecting member connects the second connecting portion and the second plug pin.

[0022] As a preferred technical solution of the Busbar structure, the first copper busbar is an integrally formed part, and / or,

[0023] The second copper busbar is an integrally formed part.

[0024] As a preferred technical solution of the busbar structure, the first pin and the second pin are made of copper material or aluminum material.

[0025] The beneficial effects of the utility model are:

[0026] The utility model provides a busbar structure. The busbar structure comprises a first insulator, a first copper bar and a second copper bar. The first copper bar comprises a first pin and a first plug pin. The first connection portion of the first pin is inserted in the first insulator and connected to the first plug pin in the first insulator. The second copper bar comprises a second pin and a second plug pin. The second connection portion of the second pin is inserted in the first insulator and connected to the second plug pin in the first insulator. The first lead-out portion of the first pin and the second lead-out portion of the second pin are both located outside the first insulator and spaced apart by an insulation distance a. The welding end of the first lead-out portion and the welding end of the second lead-out portion are located in the same plane and the spacing is a preset distance b, and b>a. The welding end of the first lead part and the welding end of the second lead part of the structure are welded to the circuit board. When power is turned on, oxidation and reduction reactions occur at the positive and negative electrodes respectively, thereby causing the migration of anions. Anions are continuously accumulated between the welding end of the first lead part and the welding end of the second lead part. To avoid a short circuit between the welding end of the first lead part and the welding end of the second lead part, the distance b between the welding end of the first lead part and the welding end of the second lead part is made greater than a, thereby effectively improving the problem of circuit short circuit caused by silver ion migration and avoiding damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a Busbar structure in the prior art;

[0028] Figure 2 This is a schematic diagram of the structure of the Busbar structure in the embodiment of the utility model;

[0029] Figure 3 Schematic diagram of the structure of the Busbar structure in the embodiment of the utility model (excluding the first insulator and the second insulator).

[0030] In the figure:

[0031] 100, soldering pin; 200, insulator; 300, connector pin plug;

[0032] 1. A first insulator;

[0033] 2. first copper bar; 21. first pin; 211. first connecting portion; 212. first lead-out portion; 22. first plug pin; 23. first connecting member;

[0034] 3. second copper bar; 31. second pin; 311. second connecting portion; 312. second lead-out portion; 32. second plug pin; 33. second connecting member;

[0035] 4. The second insulator. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] Embodiment 1

[0041] like Figure 2 and Figure 3 As shown, the present embodiment provides a Busbar structure, which includes a first insulator 1, a first copper busbar 2 and a second copper busbar 3. The first copper busbar 2 includes a first pin 21 and a first plug pin 22. The first connection portion 211 of the first pin 21 is inserted into the first insulator 1 and connected to the first plug pin 22 in the first insulator 1; the second copper busbar 3 includes a second pin 31 and a second plug pin 32. The second connection portion 311 of the second pin 31 is inserted into the first insulator 1 and connected to the second plug pin 32 in the first insulator 1; the first lead-out portion 212 of the first pin 21 and the second lead-out portion 312 of the second pin 31 are both located outside the first insulator 1 and are spaced apart from each other by an insulation distance a, and the welding end of the first lead-out portion 212 and the welding end of the second lead-out portion 312 are located in the same plane and the spacing is a preset distance b, b>a.

[0042] Optionally, the first copper bar 2 is a positive electrode bar, and the second copper bar 3 is a negative electrode bar.

[0043] The welding end of the first lead-out portion 212 and the welding end of the second lead-out portion 312 of the busbar structure are respectively welded to the circuit board. In order to ensure the stability and reliability of the circuit, high-quality welding materials need to be used. Silver is a very suitable material for welding. Silver has good electrical conductivity and thermal conductivity, which can ensure efficient transmission and heat dissipation of the circuit. In addition, silver has good oxidation resistance, which can ensure that the welding position is not easily affected by oxidation, thereby protecting the long-term stability of the circuit. Therefore, silver is added to the welding ends of the first lead-out portion 212 and the second lead-out portion 312 respectively at the welding points with the circuit board.

[0044] When the power is turned on, the water molecules at the welding end of the first lead-out portion 212 and the welding end of the second lead-out portion 312 are electrolyzed. An oxidation reaction occurs at the welding end of the first lead-out portion 212, and the silver ions combine with the hydroxide ions to form silver hydroxide. A reduction reaction occurs at the welding end of the second lead-out portion 312, and the silver hydroxide reacts with the hydrogen ions to form silver and water. Due to the electrode reaction, the silver ions at the anode are continuously reduced to discontinuous metallic silver particles toward the cathode. The migration of silver ions not only occurs on the surface of the inorganic medium, but also diffuses into the interior of the inorganic medium, causing leakage, and in severe cases, a complete short circuit between the two electrodes may be caused.

[0045] To this end, the distance b between the welding end of the first lead-out part 212 and the welding end of the second lead-out part 312 is made greater than a. When slight silver ion migration occurs between the welding end of the first lead-out part 212 and the welding end of the second lead-out part 312, the problem of circuit short circuit caused by silver ion migration can still be effectively improved, and damage to the equipment can be effectively avoided.

[0046] Optionally, the first connection portion 211 and the first lead-out portion 212 form a preset angle r, the second connection portion 311 and the second lead-out portion 312 form a preset angle r, the first connection portion 211 and the second connection portion 311 are located in the same plane, the first lead-out portion 212 and the second lead-out portion 312 are located in the same plane, r<180°; the length of the first lead-out portion 212 is different from the length of the second lead-out portion 312. In this embodiment, the above arrangement enables the welding end of the first lead-out portion 212 and the welding end of the second lead-out portion 312 to be located in the same plane, and the connecting line of the connection position of the first lead-out portion 212 and the first connection portion 211 and the connection position of the second lead-out portion 312 and the second connection portion 311 is perpendicular to the length direction of the first lead-out portion 212, thereby making the length of the first lead-out portion 212 different from the length of the second lead-out portion 312, thereby achieving the spacing b>a between the welding end of the first lead-out portion 212 and the welding end of the second lead-out portion 312. Optionally, r=30° or 60° or 90° or 120° or 150°, and the value of r is related to the angle of the circuit board.

[0047] Optionally, the busbar structure further includes a second insulator 4, which covers the connection between the first lead-out portion 212 and the first connecting portion 211, and the second insulator 4 covers the connection between the second lead-out portion 312 and the second connecting portion 311. In this embodiment, the first insulator 1 can, on the one hand, provide an insulating effect between the connection between the first lead-out portion 212 and the first connecting portion 211 and the connection between the second lead-out portion 312 and the second connecting portion 311, and on the other hand, can prevent the connection between the first lead-out portion 212 and the first connecting portion 211 and / or the connection between the second lead-out portion 312 and the second connecting portion 311 from being deformed.

[0048] Optionally, the first insulator 1 and the second insulator 4 are processed into an integrally formed injection-molded part through an injection molding process.

[0049] Optionally, the first copper bar 2 is provided with at least two first pins 21 of two adjacent first copper bars 2 are spaced apart by a preset distance c, c ≥ a. In this embodiment, the purpose of c ≥ a is to make the two adjacent first pins 21 meet the insulation distance to avoid short circuit. In other embodiments, the first copper bar 2 can also be a negative copper bar, and the second copper bar 3 can be a positive copper bar.

[0050] Optionally, the cross-sections of the first pin 21 and the second pin 31 are both flat-mouthed, and the cross-sections of the first plug pin 22 and the second plug pin 32 are both circular. In this embodiment, the cross-sections of the first pin 21 and the second pin 31 are both flat-mouthed, which is conducive to welding and fixing the first pin 21 and the second pin 31 to the circuit board respectively. The cross-sections of the first plug pin 22 and the second plug pin 32 are both circular, which greatly reduces the overall width of the busbar structure while meeting the cross-sectional area, thereby reducing the volume of the product. In other embodiments, the cross-sections of the first plug pin 22 and the second plug pin 32 are both rectangular.

[0051] Optionally, the first copper busbar 2 further includes a first connector 23, which connects the first connection portion 211 and the first plug pin 22; the second copper busbar 3 further includes a second connector 33, which connects the second connection portion 311 and the second plug pin 32. In this embodiment, one end of the first connector 23 is flat-mouthed and the other end is circular. One end of the first connector 23 is connected to the first pin 21, and the other end is connected to the first plug pin 22. This arrangement facilitates the transition of the first plug pin 22 to the first pin 21. The second connector 33 has the same structure as the first connector 23, which will not be described in detail here.

[0052] Optionally, the first copper bar 2 is an integrally formed part, and / or the second copper bar 3 is an integrally formed part. In this embodiment, the first copper bar 2 and the second copper bar 3 are made by a forging process. In other embodiments, the first copper bar 2 and the second copper bar 3 can also be made by a casting process.

[0053] Optionally, the first pin 21 and the second pin 31 are made of copper or aluminum.

[0054] Embodiment 2

[0055] The structure of this embodiment is basically the same as that of the first embodiment, and the only difference is that: the first connection portion 211 and the first lead portion 212 form a preset angle r, the second connection portion 311 and the second lead portion 312 form a preset angle r, the first connection portion 211 and the second connection portion 311 are respectively located in two planes parallel to each other along the length direction of the first lead portion 212, the first lead portion 212 and the second lead portion 312 are located in the same plane, r=90°; the length of the first lead portion 212 is the same as the length of the second lead portion 312. In this embodiment, since the first connection portion 211 and the second connection portion 311 are respectively located in two planes parallel to each other along the length direction of the first lead portion 212, the end of the first lead portion 212 connected to the first connection portion 211 and the end of the second lead portion 312 connected to the second connection portion 311 are spaced apart along the length direction of the first lead portion 212. Since the first lead-out portion 212 and the second lead-out portion 312 have the same length, the welding ends of the first lead-out portion 212 and the second lead-out portion 312 are not aligned along the length direction of the first lead-out portion 212, so the spacing b between the welding ends of the first lead-out portion 212 and the second lead-out portion 312 is greater than a.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Busbar structure, characterized by: include: A first insulator (1); A first copper busbar (2), comprising a first pin (21) and a first plug pin (22), wherein a first connection portion (211) of the first pin (21) is inserted into the first insulator (1) and connected to the first plug pin (22) in the first insulator (1); A second copper busbar (3), comprising a second pin (31) and a second plug pin (32), wherein a second connection portion (311) of the second pin (31) is inserted into the first insulator (1) and connected to the second plug pin (32) in the first insulator (1); The first lead portion (212) of the first pin (21) and the second lead portion (312) of the second pin (31) are both located outside the first insulator (1) and are separated from each other by an insulation distance a, and the welding end of the first lead portion (212) and the welding end of the second lead portion (312) are located in the same plane and are spaced apart by a preset distance b, where b>a.

2. The busbar structure according to claim 1, characterized in that: The first connecting portion (211) and the first leading portion (212) form a preset angle r, the second connecting portion (311) and the second leading portion (312) form a preset angle r, the first connecting portion (211) and the second connecting portion (311) are located in the same plane, the first leading portion (212) and the second leading portion (312) are located in the same plane, and r is less than 180°; The length of the first lead-out portion (212) is different from the length of the second lead-out portion (312).

3. The busbar structure according to claim 1, characterized in that: The first connecting portion (211) and the first leading portion (212) form a preset angle r, the second connecting portion (311) and the second leading portion (312) form a preset angle r, the first connecting portion (211) and the second leading portion (311) are respectively located in two planes parallel to each other along the length direction of the first leading portion (212), the first leading portion (212) and the second leading portion (312) are located in the same plane, r=90°; The length of the first lead-out portion (212) is the same as the length of the second lead-out portion (312).

4. The busbar structure according to claim 2 or 3, characterized in that: It also includes a second insulator (4), wherein the second insulator (4) covers the connection between the first lead-out portion (212) and the first connecting portion (211), and the second insulator (4) covers the connection between the second lead-out portion (312) and the second connecting portion (311).

5. The busbar structure according to claim 4, characterized in that: The first insulator (1) and the second insulator (4) are integrally formed injection molded parts.

6. The busbar structure according to claim 1, characterized in that: At least two of the first copper bars (2) are provided, and the first pins (21) of two adjacent first copper bars (2) are spaced apart from each other by a preset distance c, where c≥a.

7. The busbar structure according to claim 1, characterized in that: The cross-sections of the first pin (21) and the second pin (31) are both flat-mouthed, and the cross-sections of the first plug pin (22) and the second plug pin (32) are both circular.

8. The busbar structure according to claim 7, characterized in that: The first copper busbar (2) further comprises a first connecting member (23), wherein the first connecting member (23) connects the first connecting portion (211) and the first plug pin (22); The second copper busbar (3) further comprises a second connecting member (33), wherein the second connecting member (33) connects the second connecting portion (311) and the second plug pin (32).

9. The busbar structure according to claim 8, characterized in that: The first copper bar (2) is an integrally formed part, and / or, The second copper bar (3) is an integrally formed part.

10. The busbar structure according to claim 1, characterized in that: The first pin (21) and the second pin (31) are made of copper or aluminum.

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