busbar

Abstract

The application relates to the technical field of busbars, and provides a busbar which comprises a positive electrode plate, a negative electrode plate, an insulating partition plate, a first insulating baffle and a second insulating baffle; the insulating partition plate is clamped between the positive electrode plate and the negative electrode plate, the positive electrode plate is clamped between the insulating partition plate and the second insulating baffle, and the negative electrode plate is clamped between the insulating partition plate and the first insulating baffle. The positive electrode plate and the negative electrode plate are insulated through the insulating partition plate, so that the breakdown and electric leakage between the positive electrode plate and the negative electrode plate are effectively prevented; the positive electrode plate is clamped between the insulating partition plate and the second insulating baffle, so that the current is prevented from breaking down from the two side surfaces of the positive electrode plate; and the negative electrode plate is clamped between the insulating partition plate and the first insulating baffle, so that the current is prevented from breaking down from the two side surfaces of the negative electrode plate.

Description

Technical Field

[0001] The present invention belongs to the technical field of busbars, and more specifically, relates to a busbar. Background Art

[0002] In modern equipment, busbars made of copper plates (usually one copper plate is connected to the positive pole and the other copper plate is connected to the negative pole) are often used to power components. Usually, an insulating film is covered on the surface of the copper plate for insulation. However, the voltage that the insulating film can withstand is very limited and it is easy to be broken down. Summary of the Invention

[0003] The object of the present invention is to provide a busbar to solve the technical problem in the prior art that the insulating film on the busbar is easily broken down.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: providing a busbar including a positive electrode plate, a negative electrode plate, an insulating partition, a first insulating baffle, and a second insulating baffle; the insulating partition is clamped between the positive electrode plate and the negative electrode plate, the positive electrode plate is clamped between the insulating partition and the second insulating baffle, and the negative electrode plate is clamped between the insulating partition and the first insulating baffle.

[0005] Furthermore, the first insulating baffle is bonded to the negative electrode plate by insulating glue; and / or the second insulating baffle is bonded to the positive electrode plate by insulating glue.

[0006] Furthermore, the first insulating baffle is an epoxy resin board, and / or the second insulating baffle is an epoxy resin board.

[0007] Furthermore, the insulating partition is an integral piece made of epoxy resin or GPO-3 material.

[0008] Furthermore, it also includes a positive output terminal and a negative output terminal; a first insulating strip is provided on the first insulating baffle, and the positive output terminal is provided on the first insulating strip; a second insulating strip is provided on the first insulating baffle, and the negative output terminal is provided on the second insulating strip;

[0009] A third insulating strip is provided on the second insulating barrier between the first insulating strip and the second insulating strip.

[0010] Furthermore, the cross section of the third insulating strip is E-shaped.

[0011] Furthermore, a fourth insulating strip parallel to the first insulating strip is provided on the second insulating baffle, and one end of the fourth insulating strip is close to / in contact with the third insulating strip; and / or a fifth insulating strip parallel to the second insulating strip is provided on the second insulating baffle, and one end of the fifth insulating strip is close to / in contact with the third insulating strip.

[0012] Furthermore, the cross section of the fourth insulating strip is T-shaped, and / or the cross section of the fifth insulating strip is T-shaped.

[0013] Furthermore, the third insulating strip and the fourth insulating strip extend in a straight line direction and are arranged perpendicular to each other, and / or the third insulating strip and the fifth insulating strip extend in a straight line direction and are arranged perpendicular to each other.

[0014] Furthermore, the edge of the first insulating baffle and the edge of the second insulating baffle are combined to form a groove, and the groove is filled with insulating glue.

[0015] The beneficial effects of the busbar provided by the present invention are as follows: compared with the prior art, the busbar provided by the present invention is insulated between the positive electrode plate and the negative electrode plate by an insulating partition, which effectively prevents breakdown and leakage between the positive electrode plate and the negative electrode plate; the positive electrode plate is clamped between the insulating partition and the second insulating barrier, which prevents current from breaking down from the two sides of the positive electrode plate; the negative electrode plate is clamped between the insulating partition and the first insulating barrier, which prevents current from breaking down from the two sides of the negative electrode plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A three-dimensional diagram of a busbar provided in an embodiment of the present invention Figure 1 ;

[0018] Figure 2 A schematic diagram of a main view of a busbar provided in an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the middle AA section;

[0020] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0021] Figure 5A three-dimensional diagram of a busbar provided in an embodiment of the present invention Figure 2 .

[0022] Among them, the reference numerals in the figures are:

[0023] 11-positive electrode plate; 12-negative electrode plate; 13-insulating separator; 14-first insulating baffle; 15-second insulating baffle; 141-first insulating strip; 142-second insulating strip; 151-fourth insulating strip; 152-third insulating strip; 21-positive output terminal; 22-negative output terminal. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0028] Please also refer to Figures 1 to 5 The busbar provided by the present invention is now described. The busbar includes a positive electrode plate 11, a negative electrode plate 12, an insulating separator 13, a first insulating barrier 14, and a second insulating barrier 15. The insulating separator 13 is sandwiched between the positive electrode plate 11 and the negative electrode plate 12, the positive electrode plate 11 is sandwiched between the insulating separator 13 and the second insulating barrier 15, and the negative electrode plate 12 is sandwiched between the insulating separator 13 and the first insulating barrier 14.

[0029] In this way, the positive electrode plate 11 and the negative electrode plate 12 are insulated by the insulating partition 13, which effectively prevents breakdown and leakage between the positive electrode plate 11 and the negative electrode plate 12; the positive electrode plate 11 is clamped between the insulating partition 13 and the second insulating barrier 15, which prevents current from breaking down from the two sides of the positive electrode plate 11; the negative electrode plate 12 is clamped between the insulating partition 13 and the first insulating barrier 14, which prevents current from breaking down from the two sides of the negative electrode plate 12.

[0030] Optionally, in one embodiment, the positive electrode plate 11 and the negative electrode plate 12 are copper plates respectively. In this way, the copper plate has good electrical conductivity. Optionally, in one embodiment, the busbar operating voltage is: 4500V AC, and the operating current is 500A. Specifically, in one embodiment, the withstand voltage between the positive and negative electrodes is 10000V AC, 60s, without flashover or breakdown; the partial discharge is 3500V AC, and the partial discharge is <10pcs. Specifically, in one embodiment, when the positive and negative output terminals are 2500V, the insulation resistance is ≥1000MΩ; the creepage distance is ≥60mm, and the electrical clearance is ≥40mm.

[0031] Further, see Figures 1 to 5 In one embodiment of the busbar provided by the present invention, the first insulating barrier 14 is bonded to the negative electrode plate 12 with insulating adhesive; and / or the second insulating barrier 15 is bonded to the positive electrode plate 11 with insulating adhesive. This ensures that the second insulating barrier 15 is securely bonded to the positive electrode plate 11, and the insulating adhesive further prevents electrical leakage between the second insulating barrier 15 and the positive electrode plate 11. Similarly, the first insulating barrier 14 is securely bonded to the negative electrode plate 12, and the insulating adhesive further prevents electrical leakage between the first insulating barrier 14 and the negative electrode plate 12.

[0032] Optionally, in one embodiment, the insulating adhesive is a hot melt adhesive. Specifically, in one embodiment, the hot melt adhesive is EVA (EVA: ethylene-vinyl acetate copolymer) adhesive.

[0033] Further, see Figures 1 to 5 As a specific embodiment of the busbar provided by the present invention, the first insulating baffle 14 is an epoxy resin board, and / or the second insulating baffle 15 is an epoxy resin board. In this way, epoxy resin has good insulation, strength and heat resistance.

[0034] Optionally, in one embodiment, the first insulating baffle 14 can also be GPO-3 (GPO-3: a hard plate-shaped insulating material made by hot pressing an alkali-free glass fiber felt board impregnated with an unsaturated polyester resin paste and adding corresponding additives) or FR-4 (FR-4: epoxy glass cloth laminate). GPO-3 has good electrical properties under high humidity and good mechanical properties under medium temperature. It is flame retardant and has good arc resistance and resistance to leakage traces. FR-4 has good heat resistance and moisture resistance, and has good machinability.

[0035] Optionally, in one embodiment, the second insulating baffle 15 can also be GPO-3 or FR-4. GPO-3 has good electrical properties under high humidity, good mechanical properties under medium temperature, flame retardancy, and good arc resistance and resistance to leakage traces; FR-4 has good heat resistance and moisture resistance, and good machinability.

[0036] Further, see Figures 1 to 5 In a specific embodiment of the busbar provided by the present invention, the insulating partition 13 is a single piece made of epoxy resin or GPO-3. Epoxy resin offers excellent insulation, strength, and heat resistance, while GPO-3 exhibits excellent electrical performance in high humidity, mechanical properties at moderate temperatures, flame retardancy, and resistance to arcing and tracking.

[0037] Further, see Figures 1 to 5 As a specific embodiment of the busbar provided by the present invention, it also includes a positive output terminal 21 and a negative output terminal 22; a first insulating strip 141 is provided on the first insulating barrier 14, and the positive output terminal 21 is provided on the first insulating strip 141; a second insulating strip 142 is provided on the first insulating barrier 14, and the negative output terminal 22 is provided on the second insulating strip 142; and a third insulating strip 152 is provided on the second insulating barrier 15 between the first insulating strip 141 and the second insulating strip 142. In this way, on the first insulating barrier 14, the positive output terminal 21 is insulated from the outside by the first insulating strip 141, and the negative output terminal 22 is insulated from the outside by the second insulating strip 142; on the second insulating barrier 15, the third insulating strip 152 separates the positive output terminal 21 from the negative output terminal 22 to prevent leakage.

[0038] Optionally, in one embodiment, the first insulating strip 141 is made of epoxy resin or GPO-3.

[0039] Optionally, in one embodiment, the second insulating strip 142 is made of epoxy resin or GPO-3.

[0040] Optionally, in one embodiment, the positive output terminal 21 and the negative output terminal 22 are each a copper pillar. Specifically, in one embodiment, the positive output terminal 21 and the negative output terminal 22 have different heights (height: relative to the outer surface of the first insulating barrier 14), thereby increasing the creepage distance between the positive output terminal 21 and the negative output terminal 22. Specifically, in one embodiment, both the positive electrode plate 11 and the negative electrode plate 12 are provided with through holes for the positive output terminal 21 and the negative output terminal 22 to pass through (the positive electrode plate 11 is provided with through holes corresponding one-to-one to the positive output terminal 21 and the negative output terminal 22, respectively, and the negative electrode plate 12 is provided with through holes corresponding one-to-one to the positive output terminal 21 and the negative output terminal 22, respectively), and the positive output terminal 21 is insulated from the positive electrode plate 11 and the negative electrode plate 12 respectively by insulating rings (the insulating rings are clamped in the through holes), and the negative output terminal 22 is insulated from the positive electrode plate 11 and the negative electrode plate 12 respectively by insulating rings (the insulating rings are clamped in the through holes) to avoid leakage.

[0041] Further, see Figures 1 to 5 As a specific embodiment of the busbar provided by the present invention, the third insulating strip 152 has an E-shaped cross-section. Thus, the insulating strip with an E-shaped cross-section has two insulating slots, which can effectively isolate leakage between the positive output terminal 21 and the negative output terminal 22 on either side of the third insulating strip 152. Furthermore, the left side wall of the E-shape (left side wall: when the cross-section of the third insulating strip 152 is arranged in an "E" shape, the left end wall of the "E" shape is the left side wall) abuts against the second insulating baffle 15 to isolate the electrodes on both sides of the third insulating strip 152 on the second insulating baffle 15, which is very convenient.

[0042] Optionally, in one embodiment, the third insulating strip 152 is made of epoxy resin or GPO-3.

[0043] Further, see Figures 1 to 5 As a specific embodiment of the busbar provided by the present invention, the second insulating barrier 15 is provided with a fourth insulating strip 151 parallel to the first insulating strip 141, with one end of the fourth insulating strip 151 close to / in contact with the third insulating strip 152; and / or the second insulating barrier 15 is provided with a fifth insulating strip parallel to the second insulating strip 142, with one end of the fifth insulating strip close to / in contact with the third insulating strip 152. In this way, the fourth insulating strip 151 can insulate and separate the area on one side of the first insulating strip 141; the fourth insulating strip 151 and the third insulating strip 152 cooperate to enhance the isolation effect of the first insulating strip 141; similarly, the fifth insulating strip can insulate and separate the area on one side of the second insulating strip 142; the fifth insulating strip and the third insulating strip 152 cooperate to enhance the isolation effect of the second insulating strip 142.

[0044] Optionally, in one embodiment, a fourth insulating strip 151 is provided on the second insulating barrier 15 on both sides of the first insulating strip 141 ; and / or a fifth insulating strip is provided on the second insulating barrier 15 on both sides of the second insulating strip 142 .

[0045] Optionally, in one embodiment, the fourth insulating strip 151 is made of epoxy resin or GPO-3.

[0046] Optionally, in one embodiment, the fifth insulating strip is made of epoxy resin or GPO-3.

[0047] Further, see Figures 1 to 5 As a specific embodiment of the busbar provided by the present invention, the fourth insulating strip 151 has a T-shaped cross-section, and / or the fifth insulating strip has a T-shaped cross-section. Thus, the T-shaped insulating strip is relatively easy to produce, and the top surface of the T (top surface: when the cross-section of the fourth insulating strip 151 is arranged in a "T" shape, the top surface of the "T" is the top surface) abuts against the second insulating barrier 15 to isolate the two sides of the fourth insulating strip 151 on the second insulating barrier 15; the fifth insulating strip operates in the same manner.

[0048] Further, see Figures 1 to 5 In one embodiment of the busbar provided by the present invention, the third insulating bar 152 and the fourth insulating bar 151 extend in a straight line and are perpendicular to each other, and / or the third insulating bar 152 and the fifth insulating bar extend in a straight line and are perpendicular to each other. This allows the third insulating bar 152 and the fourth insulating bar 151 to support each other, reducing deformation of the third insulating bar 152 or the fourth insulating bar 151 under external forces. Similarly, the third insulating bar 152 and the fifth insulating bar can support each other, reducing deformation of the third insulating bar 152 or the fifth insulating bar under external forces.

[0049] Further, see Figures 1 to 5 In one embodiment of the busbar provided by the present invention, the edges of the first insulating barrier 14 and the second insulating barrier 15 form a groove, which is filled with insulating adhesive. Thus, the first and second insulating barriers 14, 15 encapsulate the positive electrode plate 11 and the negative electrode plate 12 within the gap between the first and second insulating barriers 14, 15, using the insulating adhesive.

[0050] Optionally, in one embodiment, the insulating adhesive is hot melt adhesive. Specifically, in one embodiment, the hot melt adhesive is EVA (EVA: ethylene-vinyl acetate copolymer) adhesive.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Busbar, characterized by: The invention comprises a positive electrode plate, a negative electrode plate, an insulating separator, a first insulating barrier, and a second insulating barrier; the insulating separator is sandwiched between the positive electrode plate and the negative electrode plate, the positive electrode plate is sandwiched between the insulating separator and the second insulating barrier, and the negative electrode plate is sandwiched between the insulating separator and the first insulating barrier; It also includes a positive output terminal and a negative output terminal; a first insulating strip is provided on the first insulating strip, and the positive output terminal is provided on the first insulating strip; a second insulating strip is provided on the first insulating strip, and the negative output terminal is provided on the second insulating strip; a third insulating strip is provided on the second insulating strip between the first insulating strip and the second insulating strip; with the outer surface of the first insulating strip as a reference, the positive output terminal and the negative output terminal are at different heights to increase the creepage distance between the positive output terminal and the negative output terminal; through holes are provided on both the positive electrode plate and the negative electrode plate for the positive output terminal and the negative output terminal to pass through, and the positive output terminal is insulated from the positive electrode plate and the negative electrode plate respectively by insulating rings, and the negative output terminal is insulated from the positive electrode plate and the negative electrode plate respectively by insulating rings; The cross-section of the third insulating strip is E-shaped; the third insulating strip has two insulating grooves, which can effectively isolate the leakage between the positive output end and the negative output end on both sides of the third insulating strip; the left side wall of the E-shaped third insulating strip abuts against the second insulating baffle and isolates the electrodes on both sides of the third insulating strip on the second insulating baffle.

2. The busbar according to claim 1, wherein: The first insulating baffle is bonded to the negative electrode plate by insulating glue; and / or the second insulating baffle is bonded to the positive electrode plate by insulating glue.

3. The busbar according to claim 1, wherein: The first insulating baffle is an epoxy resin board, and / or the second insulating baffle is an epoxy resin board.

4. The busbar according to claim 1, wherein: The insulating partition is an integral piece made of epoxy resin or GPO-3 material.

5. The busbar according to claim 1, wherein: A fourth insulating strip parallel to the first insulating strip is provided on the second insulating baffle, and one end of the fourth insulating strip is close to / in contact with the third insulating strip; and / or a fifth insulating strip parallel to the second insulating strip is provided on the second insulating baffle, and one end of the fifth insulating strip is close to / in contact with the third insulating strip.

6. The busbar according to claim 5, characterized in that: The cross section of the fourth insulating strip is T-shaped, and / or the cross section of the fifth insulating strip is T-shaped.

7. The busbar according to claim 5, characterized in that: The third insulating strip and the fourth insulating strip extend in a straight line direction and are arranged perpendicular to each other, and / or the third insulating strip and the fifth insulating strip extend in a straight line direction and are arranged perpendicular to each other.

8. The busbar according to any one of claims 1 to 7, characterized in that: The edge of the first insulating baffle and the edge of the second insulating baffle are combined to form a groove, and the groove is filled with insulating glue.

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