CN216902547U

CN216902547U - Busbar for capacitor

Info

Publication number: CN216902547U
Application number: CN202123054933.3U
Authority: CN
Inventors: 张自魁; 许峰; 潘浩
Original assignee: Anhui Yiguan Intelligent Equipment Technology Co ltd
Current assignee: Anhui Yiguan Intelligent Equipment Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-07-05
Anticipated expiration: 2031-12-07

Abstract

A busbar for a capacitor comprises a busbar body and at least one leading-out terminal, wherein the busbar body and the leading-out terminal are both made of copper plates; the bus bar body is provided with an outgoing terminal positioning hole and/or an outgoing terminal positioning groove of an outgoing terminal; the leading-out terminal consists of two leading-out terminal pieces; each leading-out terminal piece is provided with a leading-out part, a connecting part and a transition connecting part; the leading-out parts and/or the transition connecting parts of the two leading-out terminal pieces are connected with each other, and the connecting parts of the two leading-out terminal pieces and the transition connecting parts vertically extend leftwards or rightwards; the connecting part of the leading-out terminal is arranged in a leading-out terminal positioning hole and/or a leading-out terminal positioning groove on the busbar body and fixedly connected together by welding; the bus bar mainly solves the problems that the conventional bus bar for the capacitor is thick, and the space is tense during production so that the operation is difficult; the processing mould is complex and has high cost; the processing of the copper bar needs large-tonnage stamping equipment, and the processing cost is high. On the premise of ensuring the thickness of the leading-out terminal, the busbar body can be made of a thinner copper plate, so that the material weight is reduced, the material is saved, and the cost is reduced.

Description

Busbar for capacitor

Technical Field

The utility model relates to the technical field of a busbar and leading-out terminal leading-out structure connected inside a capacitor, in particular to a busbar for a capacitor.

Background

One of the bus bar and leading-out terminal leading-out structures internally connected with the existing capacitor is shown in fig. 1 and 2, and a bus bar body 1, a leading-out terminal 2 and a welding end 3 are formed by integrally stamping and bending a copper plate with the thickness of 1-3 mm. The busbar has the following defects: 1) the thickness of the leading-out terminal is specially required, the copper plate is required to have certain thickness, the leading-out terminal 2 and the busbar body 1 are integrated, the material thickness is the same, the material consumption is large, and the cost is high; 2) the processing die of the busbar is complex and has high cost; 3) the copper bar is processed by large-tonnage stamping equipment (more than 80T), so that the processing cost is high; 4) the bus bar material is thick, and the welding end 3 is fast in heat dissipation during welding, so that welding is difficult; 5) the thickness of the busbar material is thicker, and the thickness B of the busbar is also thicker, so that the space is tense and the operation is difficult when the capacitor is produced.

Another structure of a busbar and a leading-out terminal connected inside the existing capacitor is shown in fig. 3 and 4, and the internal structure is composed of a busbar body 1 and a leading-out terminal 2, wherein the thickness of the material of the busbar body 1 and the thickness of the material of the leading-out terminal 2 can be the same or different. The busbar body 1 and the leading-out terminal 2 are formed by stamping and folding different dies. The leading-out terminal 2 is riveted or welded on the busbar body 1. Compared with the existing busbar shown in the figures 1 and 2, the busbar has the advantages of simple die, low processing cost and the like. However, the bus bar is formed by overlapping and riveting or welding a part of the leading-out terminal 2 on the bus bar body 1, and the thickness B of the bus bar is the sum of the thicknesses of the two materials of the bus bar body 1 and the leading-out terminal 2. This results in a thicker busbar and a more tight space and more difficult handling during capacitor production.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a busbar for a capacitor, which mainly solves the problems in the prior art that: 1) the thickness B of the busbar is thicker, so that the capacitor is difficult to operate due to the fact that space is tight during production; 2) the processing mould is complex and has very high cost, which is usually more than one hundred thousand yuan; 3) the copper bar is processed by large-tonnage stamping equipment (more than 80T), so that the processing cost is high; according to the structure, on the premise of ensuring the thickness of the leading-out terminal, the bus bar body can be made of a thinner copper plate, so that the material weight can be effectively reduced, the material can be saved, and the cost can be reduced.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a condenser is with arranging, is arranged body, at least one leading-out terminal including female, its characterized in that: the busbar body and the leading-out terminal are both made of copper plates; the bus bar body is provided with a leading-out terminal positioning hole and/or a leading-out terminal positioning groove of a leading-out terminal; the leading-out terminal consists of three parts, namely a leading-out part, a connecting part and a transition connecting part; the connection part of the leading-out terminal is provided with two parts which are separated from each other left and right and is respectively connected with one end of the transition connection part in a vertical state; the other end of the transition connecting part is connected with the leading-out part; the connecting part of the leading-out terminal is arranged in a leading-out terminal positioning hole and/or a leading-out terminal positioning groove on the busbar body and fixedly connected together by welding; the leading-out terminal consists of two leading-out terminal pieces; each lead-out terminal piece is provided with a lead-out part, a connecting part and a transition connecting part; the leading-out parts and/or the transition connecting parts of the two leading-out terminal pieces are connected in a resistance welding, tin welding, laser welding, ultrasonic welding, riveting or bonding mode, and the connecting parts of the two leading-out terminal pieces and the transition connecting parts extend leftwards or rightwards vertically.

The capacitor busbar is characterized in that: the bus bar body is provided with a welding end.

The capacitor busbar is characterized in that: and the bus bar body is provided with a lead-out terminal hole for leading out a lead-out terminal of the bus bar for another capacitor to pass through.

The capacitor busbar is characterized in that: the bus bar body is provided with holes for smoothly discharging air inside the product and enabling the filler to permeate into the product when the filler is encapsulated.

The capacitor busbar is characterized in that: and a nut is arranged on the leading-out part of the leading-out terminal.

The capacitor busbar is characterized in that: and a copper plate or copper foil is welded at the joint of the lower part of the busbar body and the connecting part of the leading-out terminal.

In view of the technical characteristics, the utility model has the following beneficial effects:

1. the utility model discloses a busbar for a capacitor, which provides a structure form for connecting the busbar in the capacitor and leading out a terminal, compared with the existing product, the product of the utility model has the following advantages: 1) the basic unit structure of the leading-out terminal is simple, a stamping processing die is simple, high-speed stamping can be realized, and the die and processing cost is low; 2) the processing terminal stamping equipment is general equipment (below 80T), so that the processing cost is low; 3) the bus bar body has a simple structure, is a simple sheet structure, and has a simple stamping processing die and low cost; 4) particularly, the leading-out terminal is formed by combining two or more than two pieces, and the connecting part of the leading-out terminal is embedded into the busbar body, so that the thickness of the connecting part of the leading-out terminal and the busbar body, namely the thickness of a copper bar, is reduced, and the production operability of the capacitor is greatly facilitated.

2. The bus bar for the capacitor is formed by combining the two parts of the independent leading-out terminal and the bus bar body, greatly facilitates the selection of copper bar materials and simplifies the design of the copper bar structure. Meanwhile, according to different requirements, the busbar body is made of a thin copper plate, so that the material weight can be effectively reduced, the material can be saved, and the cost can be reduced.

Drawings

Fig. 1 is a schematic structural diagram of a busbar for a capacitor in the prior art.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic structural diagram of another capacitor busbar according to the prior art.

Fig. 4 is a side view of fig. 3.

Fig. 5 is a schematic structural diagram of a busbar according to embodiment 1 of the present invention.

Fig. 6 is a side view of fig. 5.

Fig. 7 is a schematic view of a structure of the outgoing terminal of fig. 5.

Fig. 8 is a schematic structural view of a piece of lead-out terminal piece constituting the lead-out terminal of fig. 7.

Fig. 9 is a schematic structural diagram of a busbar according to embodiment 2 of the present invention.

Fig. 10 is a side view of fig. 9.

Fig. 11 is a schematic structural view of a busbar body in embodiment 2 of the present invention.

Fig. 12 is another schematic view of the lead-out terminal of the present invention.

Fig. 13 is a schematic view of still another structure of the lead-out terminal of the present invention.

In the figure: 1-busbar body; 11-leading-out terminal positioning holes; 12-threading a terminal hole; 13-well; 2-leading-out terminals; 21-a lead-out section; 22-a connecting part; 23-a transition connection; 3-welding the end; b-the thickness of the copper bar.

Detailed Description

The utility model will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

Referring to fig. 5 to 8, an embodiment 1 is a busbar for a capacitor.

The bus bar comprises a bus bar body 1 and at least one leading-out terminal 2, wherein the bus bar body 1 and the leading-out terminal 2 are two completely independent parts, and the bus bar body 1 and the leading-out terminal 2 are both made of copper plates; the bus bar body 1 is provided with an outgoing terminal positioning hole 11 and/or an outgoing terminal positioning groove of the outgoing terminal 2; the leading-out terminal 2 is formed by combining two leading-out terminal pieces; each leading-out terminal piece consists of a leading-out part 21, a connecting part 22 and a transition connecting part 23; the connection portion 22 of the lead terminal 2 (two lead terminal pieces) is divided into left and right parts and is vertical to the transition connection portion 23; the connecting part 22 of the leading-out terminal 2 is arranged in the leading-out terminal positioning hole 11 and/or the leading-out terminal positioning groove on the busbar body 1 and fixedly connected together by welding.

When manufacturing, firstly, a bus bar body 1 is manufactured by adopting a die or a laser cutting method and the like, the bus bar body 1 is formed by a flat copper plate, and an leading-out terminal positioning hole 11 and/or a leading-out terminal positioning groove which are suitable for a connecting part 22 of a leading-out terminal 2 are arranged on the bus bar body 1; the leading-out terminal pieces (figure 8) forming the leading-out terminal 2 are manufactured by adopting a die or a laser cutting method and the like, the two leading-out terminal pieces are aligned back to back and combined in a welding (laser welding, ultrasonic welding, resistance welding and the like) or riveting or bonding mode and the like to form the leading-out terminal 2 (figure 7), and the lower plane or the upper plane of the connecting part 22 of the leading-out terminal 2 is in the same plane (or approximately in the same plane). The connecting part 22 of the leading terminal 2 is embedded into the leading terminal positioning hole 11 and/or the leading terminal positioning groove of the busbar body 1, and then the connecting part 22 of the leading terminal 2 is welded with the contact part of the leading terminal positioning hole 11 of the busbar body 1 by laser welding, resistance welding or tin welding. And setting the required quantity and the corresponding required positions according to the requirements. If the thickness of the leading-out part of the leading-out terminal 2 is 2mm, the thickness of the busbar body is 1mm, the thickness B of the copper bar is 3mm according to the prior art, and the thickness B of the copper bar is 1mm according to the utility model, so that the thickness B of the copper bar is reduced by 2mm (reduced by 66.7%). And two copper bars are arranged on each product, and the total thickness of the copper bars is reduced by 4 mm. This 4mm size greatly facilitates the capacitor manufacturing operation relative to the capacitor, while reducing the cost of the capacitor.

Referring to fig. 9 to 11, embodiment 2 of the present invention is shown.

In order to facilitate the connection of the copper bar and the capacitor core, a welding end 3 can be arranged at the connecting part of the copper bar body 1 and the capacitor core, the welding end 3 can be made of conductive materials such as copper foil, copper sheet and copper wire, and the welding end 3 can be fixedly connected with the copper bar body 1 through welding modes such as laser welding, resistance welding, high-frequency welding or soldering iron welding.

Two electrodes need to be led out of the capacitor, and each capacitor needs two copper bars to be combined together and welded on a capacitor core. In order to prevent the two electrodes from short circuit and meet the requirements of leading-out electrodes, a leading-out terminal hole 12 needs to be arranged on one copper bar to facilitate the leading-out terminal 2 of the other copper bar to pass through, and the insulation gap between the leading-out terminal hole 12 and the leading-out terminal 2 of the other copper bar meets the product requirements.

When the capacitor is produced, in order to ensure that the air in the product is smoothly discharged and the epoxy resin permeates when the epoxy resin (or other fillers) is encapsulated, holes 13 (such as strip holes) can be arranged on the busbar body of the copper bar.

Referring to fig. 12 and 13, in order to meet different leading-out modes of leading-out terminals 2 of different products, leading-out terminals 2 may be designed into different shapes according to requirements, such as the shapes shown in fig. 12 and 13. In order to facilitate the welding operation, when the lead terminal sheet is manufactured, the transition connection portion 23 and the connection portion 22 of the lead terminal are in a perpendicular state.

In order to facilitate the electrical connection of the capacitor, the lead-out portion 21 of the lead-out terminal 2 may be provided with a nut to facilitate the installation and use of the customer.

In order to increase the large current passing capability of the copper bar, a copper plate or a copper foil can be additionally welded at the joint of the connecting part 22 of the busbar body 1 and the leading-out terminal 2 below the busbar body 1 so as to increase the sectional area of passing current. The copper plate or the copper foil can be welded below the busbar body 1, can also be welded on the busbar body 1, and can also be welded on the upper and lower surfaces of the busbar body 1.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields will be covered by the scope of the present invention.

Claims

1. The utility model provides a condenser is with arranging, arranges body (1), at least one leading-out terminal (2) including female, its characterized in that: the busbar body (1) and the leading-out terminal (2) are both made of copper plates; the bus bar body (1) is provided with an outgoing terminal positioning hole (11) and/or an outgoing terminal positioning groove of the outgoing terminal (2); the leading-out terminal (2) consists of three parts, namely a leading-out part (21), a connecting part (22) and a transition connecting part (23); the connecting part (22) of the leading-out terminal (2) is provided with two parts which are separated from each other left and right and is respectively connected with one end of the transition connecting part (23) in a vertical state; the other end of the transition connecting part (23) is connected with the leading-out part (21); the connecting part (22) of the leading-out terminal (2) is arranged in a leading-out terminal positioning hole (11) and/or a leading-out terminal positioning groove on the busbar body (1) and fixedly connected together by welding; the leading-out terminal (2) consists of two leading-out terminal pieces; each lead-out terminal piece is provided with a lead-out part (21), a connecting part (22) and a transition connecting part (23); the leading parts (21) and/or the transition connecting parts (23) of the two leading terminal pieces are connected in a resistance welding mode, a soldering mode, a laser welding mode, an ultrasonic welding mode, a riveting mode or an adhesion mode, and the connecting parts (22) of the two leading terminal pieces and the transition connecting parts (23) extend leftwards or rightwards in a vertical mode.

2. The busbar according to claim 1, wherein: the bus bar body (1) is provided with a welding end (3).

3. The busbar according to claim 1, wherein: the bus bar body (1) is provided with a lead-out terminal hole (12) for leading out terminals of another bus bar for the capacitor to pass through.

4. The busbar according to claim 1, wherein: the bus bar body (1) is provided with holes (13) for smoothly discharging air in the product and infiltrating the filler when the filler is encapsulated.

5. The busbar according to claim 1, wherein: the lead-out part (21) of the lead-out terminal (2) is provided with a nut.

6. The busbar according to claim 1, wherein: and a copper plate or copper foil is welded at the joint of the lower part of the busbar body (1) and the connecting part (22) of the leading-out terminal (2).