CN112713004A

CN112713004A - Bus terminal board of aluminum electrolytic capacitor module

Info

Publication number: CN112713004A
Application number: CN202110059121.3A
Authority: CN
Inventors: 周旺龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-04-27

Abstract

The invention provides an injection molding integral design of a bus terminal board of an aluminum electrolytic capacitor module, which comprises a conductive copper bar and an injection molding body, and specifically comprises the following steps: the structure is formed by conductive copper bars of series, parallel or multi-stage series-parallel circuits formed by the internal vertical small aluminum electrolytic capacitors in the aluminum electrolytic capacitor module, and the bus terminal board is integrally coated by an injection molding body and is internally insulated and isolated into an integral independent bus terminal board; the bus terminal board improves the use safety and insulation reliability of the aluminum electrolytic capacitor module product; the number of structural parts is greatly reduced, and the material and process cost is reduced; the manufacturing process of the aluminum electrolytic capacitor module is simplified, the manufacturing working hours are shortened, and the economic benefit is improved; the appearance of a large number of defective products in the manufacturing process of the product is avoided, so that the batch manufacturing cost of the product is reduced.

Description

Bus terminal board of aluminum electrolytic capacitor module

The technical field is as follows:

the invention relates to an integrated structure mode of an aluminum electrolytic capacitor module, in particular to an integrated structure mode in which a plurality of positive and negative electrode lead-out copper bars and insulating paper of the aluminum electrolytic capacitor integrated module are designed into an integral independent part.

Background art:

generally, aluminum electrolytic capacitors are discrete structures, including lead wires, soldering lugs, bolts and other leading-out products, and users need to perform series-parallel connection combination on the products, integrate various performance parameters to adapt to indexes of the products such as voltage, power, ripple current, correction frequency, temperature coefficient and the like, so that the capacitor combination is formed and applied to industrial equipment and various electronic products.

The discrete aluminum electrolytic capacitor is integrated into the integral aluminum electrolytic capacitor module, so that the heat dissipation capability can be enhanced, and the electrical performance can be optimized, for example, the product of the small aluminum electrolytic capacitor integrated module disclosed in patent application 202011082745.9 or 202011082897.9, the ripple current capability, the high-frequency characteristic, the long service life and the like are greatly improved.

At present, in the process of manufacturing an aluminum electrolytic capacitor module product, positive electrodes, negative electrodes or soldering lug terminals of all discrete aluminum electrolytic capacitors are required to be welded with a bus positive electrode conductive copper bar and a bus negative electrode conductive copper bar, insulation needs to be made between the bus positive electrode conductive copper bar and the bus negative electrode conductive copper bar to ensure safety, and because the distance between the positive electrode and the negative electrode of the small aluminum electrolytic capacitor is short, the bus positive electrode conductive copper bar and the bus negative electrode conductive copper bar need to be close to each other as much as possible to reduce inductance, so that higher manufacturing process difficulty exists; the rejection rate is high in the actual manufacturing process, and a large electric shock safety risk exists for manufacturing workers; high failure rate of products in use and the like

Therefore, a new product design is needed to avoid the above problems and improve the quality.

The invention content is as follows:

the invention provides an injection molding integral design of a bus terminal board of an aluminum electrolytic capacitor module, which comprises a conductive copper bar and an injection molding body, and specifically comprises the following steps: the structure is formed by conductive copper bars of series, parallel or multi-stage series-parallel circuits formed by the internal vertical small aluminum electrolytic capacitors in the aluminum electrolytic capacitor module, the injection molding body is integrally coated and insulated internally to form an integrally independent bus terminal board, and the injection molding body is kept away from the space at the welding positions of the positive and negative electrode leads or soldering lugs of the discrete aluminum electrolytic capacitor and the conductive copper bars and the positions of external electric connection terminals of the aluminum electrolytic capacitor module; the bus terminal board of the multi-stage series and parallel circuit structure can be provided with a voltage-sharing resistor or the welding position injection molding clearance of other necessary circuit components; the bus terminal board can be adaptively changed in shape according to the structural shape of the aluminum electrolytic capacitor module and the installation position, angle, distance and the like of the electric connection terminal.

The overall design of the bus terminal board greatly improves the use safety and the insulation reliability of the aluminum electrolytic capacitor module product; the number of structural parts is greatly reduced, and the material and process cost is reduced; the manufacturing process of the aluminum electrolytic capacitor module is simplified, the manufacturing working hours are shortened, and the economic benefit is improved; the appearance of a large number of defective products in the manufacturing process of the product is avoided, so that the batch manufacturing cost of the product is reduced.

Description of the drawings:

the above and other features of the present invention will be presented in the following description with reference to the accompanying drawings;

FIG. 1: the schematic diagram of the structural installation of the aluminum electrolytic capacitor module adopting the discrete conductive copper bar and the insulating paper is shown;

FIG. 2: the schematic diagram of the structural installation of the aluminum electrolytic capacitor module adopting the integral injection molding bus terminal board;

the figures in the drawings represent the following:

1-outer side cover

11-case cover terminal guard board

2-positive electrode bus bar

21-upper positive electrode bus bar

211-upper positive bus bar terminal

22-lower positive electrode busbar

221-lower positive bus bar terminal

3-negative electrode bus bar

31-upper negative electrode bus bar

311-upper negative electrode bus bar terminal

32-lower negative electrode bus bar

321-lower negative electrode bus bar terminal

4-insulating paper

5-limiting groove rack

51-spacing groove frame terminal guard board

6-discrete aluminum electrolytic capacitor

61-discrete lead wire of aluminum electrolytic capacitor

7-aluminium electrolytic capacitor module

8-bus terminal board

Terminal leading-out board of 81-bus terminal board

82-clearance of injection molding body

83-bus terminal board injection molding body

The specific implementation mode is as follows:

preferred embodiments of the following:

the present invention will be described in further detail with reference to the following detailed description and accompanying drawings. In the following embodiments, numerous details are set forth in order to provide a better understanding of the present invention. However, those skilled in the art will readily recognize that some of the features may be replaced or omitted by other materials, methods, or the like in various circumstances. In some cases, related operations are not shown or described in the specification, so as to avoid obscuring the core of the present application from excessive description, and to enable those skilled in the art to fully understand the related operations from the description in the specification and the general knowledge in the art.

The following are preferred embodiments:

referring to fig. 1, an aluminum electrolytic capacitor module with a cellular structure is formed by discrete conductive copper bars and insulating paper, wherein an upper negative busbar 31 and a lower negative busbar 32 are firstly placed in a limiting cell frame 5 and are respectively and electrically connected with leads 61 corresponding to the discrete aluminum electrolytic capacitors 6 in a welding manner, an outgoing terminal 311 of the upper negative busbar 31 and an outgoing terminal 321 of the lower negative busbar 32 extend out along a limiting cell frame outgoing terminal guard plate 51 towards the outer side of the aluminum electrolytic capacitor module, then the insulating paper 4 is placed in the limiting cell frame 5, an upper positive busbar 21 and a lower positive busbar 22 are then placed in the limiting cell 5 and are respectively and electrically connected with the leads 61 corresponding to the discrete aluminum electrolytic capacitors 6 in a welding manner, an outgoing terminal 211 of the upper positive busbar 21 and an outgoing terminal 221 of the lower positive busbar 22 extend out along the limiting cell frame outgoing terminal guard plate 51 towards the outer side of the aluminum electrolytic capacitor module and correspond to the outgoing terminal 311 of the upper negative busbar 31 and the outgoing terminal 321 of the lower, and finally, placing the outer shell cover 1 into the limiting groove 5 to ensure external insulation, and correspondingly assembling the shell cover terminal guard plate 11 and the limiting groove frame 5 terminal guard plate 51 to form a complete aluminum electrolytic capacitor module bus and leading-out terminal insulation leading-out structure.

Referring to fig. 2, the aluminum electrolytic capacitor module with a cellular structure adopting an integrally injection molded bus bar terminal block, wherein the bus bar terminal block 8 is completely and once placed in the limiting cell frame 5 without the limiting cell frame leading-out terminal guard plate 51, so that the leads 61 of the discrete aluminum electrolytic capacitor 6 are respectively and electrically connected with the welding position clearance 82 of the corresponding bus bar terminal block 8 in a welding mode, the injection molded body 83 of the bus bar terminal block 8 ensures reliable insulation safety between the positive and negative electrodes of each part inside and between the welding positions of the leads 61 of the discrete aluminum electrolytic capacitor 6, and simultaneously ensures the outward insulation safety of the terminal leading-out plates 81 of the bus bar terminal block of the terminal leading-out extension part among the leading-

out terminals

311, 211. And then correspondingly putting the shell cover with the shell cover terminal protection plate 11 removed from the outer side into the shell cover, and completing the welding assembly of the bus and the leading-out terminal of the aluminum electrolytic capacitor module.

The invention has been described above using specific examples, which are only intended to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims

1. The utility model provides an aluminium electrolytic capacitor module bus-bar terminal board of wholly moulding plastics, includes electrically conductive copper bar and injection moulding body, electrically conductive copper bar for the discrete aluminium electrolytic capacitor constitutes the electrically conductive copper bar of series connection, parallel connection or multistage series-parallel circuit structure in the aluminium electrolytic capacitor module, the injection moulding body is the material of moulding plastics of insulating isolation between the electrically conductive copper bar of whole cladding and each inside electrically conductive copper bar.

2. The bus bar terminal board of aluminum electrolytic capacitor module as claimed in claim 1, wherein the injection molding is performed at the welding position of the positive and negative electrode leads or soldering pieces of the discrete aluminum electrolytic capacitor and the conductive copper bar, and the position of the external electrical connection terminal of the aluminum electrolytic capacitor module.

3. The bus bar terminal board of the aluminum electrolytic capacitor module as claimed in claim 1, wherein the bus bar terminal board of the multistage series and parallel circuit structure can be provided with a welding position injection molding clearance of a voltage-sharing resistor or other circuit necessary components.

4. The bus bar terminal block for aluminum electrolytic capacitor modules as defined in claim 1, wherein the bus bar terminal block can be changed in shape according to the structure, shape and mounting position, angle, distance, etc. of the electrical connection terminals of the aluminum electrolytic capacitor module.

5. The aluminum electrolytic capacitor module bus bar terminal block of claim 1, wherein one bus bar terminal block has one or more sets of positive and negative bus bar circuits.

6. The bus bar terminal board of the aluminum electrolytic capacitor module as claimed in claim 1, wherein the additional structure is added on the surface of the bus bar terminal board, so that an outer shell cover and a part or all of an inner limiting cell board of the aluminum electrolytic capacitor module can be eliminated, and the aluminum electrolytic capacitor module is directly welded with a discrete aluminum electrolytic capacitor limiting clamp.