A busbar structure of a capacitor

Abstract

The utility model provides a busbar structure of a capacitor, which comprises: a shell, a busbar assembly and an insulating assembly; a core group is installed in the shell; the busbar assembly comprises a first busbar and a second busbar, the first busbar defines a plurality of first welding pins, the first busbar is connected to an electrode surface of the core group, so as to lead an electrode of the core group to the plurality of first welding pins, the second busbar defines a plurality of second welding pins, the second busbar is connected to another electrode surface of the core group, so as to lead another electrode of the core group to the plurality of second welding pins; the insulating assembly comprises a first insulating member and a second insulating member, the first insulating member is arranged between the first busbar and the second busbar, and the second insulating member is pressed from the confluence of the first busbar and the second busbar, so as to make the first busbar and the second busbar fit the first insulating member. The busbar structure of the capacitor occupies a small space and is convenient for connection with a counterpart.

Description

Technical Field

[0001] The utility model relates to the technical field of electronics, in particular to a busbar structure of a capacitor. Background Art

[0002] With the rapid development of power electronics technology, metallized film capacitors are increasingly used in industrial control, new energy, automotive electronics, rail transit, power grids and other fields. The diversification of the connection structure of capacitors to accessories also places more complex requirements on the connection structure of capacitor terminals.

[0003] At present, the capacitor terminals generally adopted in the industry are mostly mechanically overlapped and fastened with screws or laser welded with narrow and long terminals. The distance between the two terminals of the screw-fastened structure is large, and the width requirement of the terminals is also relatively large. The laser-welded terminals also need to be long enough to ensure the space for laser welding. These two structures have caused great limitations on the spatial arrangement requirements of the product. Therefore, it is very necessary to design a busbar structure that is easy to weld. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems in the above technology to a certain extent. To this end, the utility model aims to provide a busbar structure of a capacitor, which occupies a small space and is convenient for connecting to a counterpart.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a busbar structure of a capacitor, which comprises: a shell, a core group, a busbar assembly and an insulating assembly;

[0006] The core group is installed in the shell;

[0007] The busbar assembly comprises a first busbar and a second busbar, wherein the first busbar defines a plurality of first welding pins, the first busbar is connected to an electrode surface of the core group so as to lead an electrode of the core group to the plurality of first welding pins, and the second busbar defines a plurality of second welding pins, the second busbar is connected to another electrode surface of the core group so as to lead another electrode of the core group to the plurality of second welding pins;

[0008] The insulating assembly comprises a first insulating member and a second insulating member, wherein the first insulating member is arranged between the first busbar and the second busbar, and the second insulating member is pressed at the junction of the first busbar and the second busbar so that the first busbar and the second busbar are in contact with the first insulating member.

[0009] According to the busbar structure of a capacitor proposed by the utility model, the two electrode surfaces of the core group in the shell are led to the outside of the shell through the busbar assembly, and the gathering place of the busbar assembly is insulated and pressed through the insulating member, so that the busbar extending outside the shell has a compressed space and an insulating function, so that the capacitor can adapt to complex installation environments and be connected to the counterpart. The busbar structure of the capacitor can be easily connected to the counterpart, increase the utilization space of the busbar design, and occupy a small space.

[0010] In addition, the busbar structure of a capacitor proposed in the above embodiment of the utility model may also have the following additional technical features:

[0011] Optionally, both the first welding needle and the second welding needle are provided with a groove, and the groove is arranged along the length direction or the width direction of the first welding needle and the second welding needle.

[0012] Further, a plurality of the first welding needles and a plurality of the second welding needles are arranged close to each other in one row, or a plurality of the first welding needles and a plurality of the first welding needles are arranged far away from each other in two rows.

[0013] Further, when the first welding pin and the second welding pin are arranged in a row, the groove is arranged along the length direction of the first welding pin and the second welding pin, and the first bus bar and the second bus bar extend from one side of the shell; when the first welding pin and the second welding pin are arranged in two rows, the groove is arranged along the width direction of the first welding pin and the second welding pin, and the first bus bar and the second bus bar extend from the middle of the shell.

[0014] Furthermore, the first welding needle and the second welding needle both have a first folded edge and a second folded edge, the second folded edge is vertically arranged, and the groove is arranged on the second folded edge.

[0015] Optionally, a limiting member is defined on the inner wall of the shell to limit the first busbar and the second busbar.

[0016] Optionally, a plurality of mounting holes are provided on the outer edge of the shell.

[0017] Optionally, a filler is injected into the gap of the shell to fill the opening of the shell flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a busbar structure of a capacitor according to an embodiment of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of a busbar structure of a capacitor according to an embodiment of the utility model;

[0020] Figure 3It is a partial structural schematic diagram of a busbar structure of a capacitor according to an embodiment of the utility model;

[0021] Figure 4 is a structural schematic diagram of a busbar structure of a capacitor according to another embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of a busbar structure of a capacitor according to another embodiment of the utility model from another perspective;

[0023] Figure 6 It is a partial structural schematic diagram of a busbar structure of a capacitor according to another embodiment of the utility model;

[0024] Figure 7 It is a partial structural schematic diagram of a busbar structure of a capacitor according to another embodiment of the utility model;

[0025] Description of reference numerals:

[0026] Shell 1, stopper 11, mounting hole 12, core group 2, busbar assembly 3, first busbar 31, first welding pin 311, first folded second busbar 32, second welding pin 321, groove 33, insulation assembly 4, first insulation part 41, second insulation part 42, filler 5. DETAILED DESCRIPTION

[0027] 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In order to better understand the above technical solution, the exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Reference below Figure 1-Figure 7 , the implementation of the busbar structure of the capacitor proposed in the embodiment of the utility model is described in detail.

[0031] The busbar structure of the capacitor according to the embodiment of the utility model comprises: a housing 1 , a core group 2 , a busbar assembly 3 and an insulating assembly 4 .

[0032] Specifically, a core group 2 is installed in the shell 1; the busbar assembly 3 has a first busbar 31 and a second busbar 32, the first busbar 31 defines a plurality of first welding pins 311, the first busbar 31 is connected to an electrode surface of the core group 2 to lead an electrode of the core group 2 to the plurality of first welding pins 311, the second busbar 32 defines a plurality of second welding pins 321, the second busbar 32 is connected to the other electrode surface of the core group 2 to lead the other electrode of the core group 2 to the plurality of second welding pins 321; the insulating assembly 4 has a first insulating member 41 and a second insulating member 42, the first insulating member 41 is arranged between the first busbar 31 and the second busbar 32, and the second insulating member 42 is pressed from the confluence of the first busbar 31 and the second busbar 32 to make the first busbar 31 and the second busbar 32 fit the first insulating member 41.

[0033] That is to say, the first busbar 31 and the second busbar 32 are connected to the two electrodes of the core group 2 in the shell 1, and the first busbar 31 and the second busbar 32 are separated and insulated by the first insulating member 41 at the junction of the first busbar 31 and the second busbar 32, and then the first busbar 31 and the second busbar 32 are pressed and insulated at the junction by the second insulating member 42, so that the first busbar 31 and the second busbar 32 are attached to the first insulating member 41, thereby reducing the space occupied by the first busbar 31 and the second busbar 32 outside the shell 1, and thus facilitating connection with the counterpart in a complex installation environment.

[0034] Thus, the two electrode surfaces of the core group 2 in the shell 1 are led to the outside of the shell 1 through the busbar assembly 3, and the gathering of the busbar assembly 3 is insulated and pressed through the insulating member, so that the busbar extending outside the shell 1 has a compressed space and an insulating function, so that the capacitor can adapt to complex installation environments and be connected to the counterpart. The busbar structure of the capacitor occupies a small space and is easy to connect to the counterpart.

[0035] For the connection between the first welding needle 311 and the second welding needle 321 and the counterpart, the first welding needle 311 and the second welding needle 321 are both provided with a groove 33, and the groove 33 is arranged along the length direction or width direction of the first welding needle 311 and the second welding needle 321. It can be understood that the arrangement of the groove 33 can facilitate the welding with the counterpart in the groove 33, so that the welding is more firm and the stability of the welding is ensured. The arrangement of the groove 33 along the length direction or width direction of the first welding needle 311 and the second welding needle 321 can facilitate the welding with different counterparts and wires, so as to facilitate the matching of the directions of various counterparts and wires, thereby improving the matching degree of the installation. Among them, the groove 33 can be integrally formed on the welding needle by stamping.

[0036] Further, a plurality of first welding pins 311 and a plurality of second welding pins 321 are arranged close to each other in a row, or a plurality of first welding pins 311 and a plurality of first welding pins 311 are arranged away from each other in two rows. It can be understood that in order to save installation space, components with multiple functions are usually installed together, and the first welding pins 311 and the second welding pins 321 are arranged in a row, which can facilitate the flattening of the first welding pins 311 and the second welding pins 321, thereby further reducing the occupied space of the first welding pins 311 and the second welding pins 321, so as to facilitate the first welding pins 311 and the second welding pins 321 to avoid adjacent components and welding to the counterpart; in other embodiments, a plurality of first welding pins 311 and a plurality of first welding pins 311 are arranged away from each other in two rows, so as to facilitate the staggering of the first welding pins 311 and the second welding pins 321, so as to expand the welding space after avoiding adjacent components at the pressing position, and then match some counterparts that require a larger welding space to connect, thereby improving the convenience of welding.

[0037] Further, when the first welding needle 311 and the second welding needle 321 are arranged in a row, the groove 33 is arranged along the length direction of the first welding needle 311 and the second welding needle 321, and the first busbar 31 and the second busbar 32 extend from one side of the shell 1; when the first welding needle 311 and the second welding needle 321 are arranged in two rows, the groove 33 is arranged along the width direction of the first welding needle 311 and the second welding needle 321, and the first busbar 31 and the second busbar 32 extend from the middle of the shell 1. It can be understood that when the first welding pin 311 and the second welding pin 321 are arranged in a row, the groove 33 is arranged along the length direction of the first welding pin 311 and the second welding pin 321, so that the space where the first welding pin 311 and the second welding pin 321 are arranged in a row can be fully utilized, and a plurality of first welding pins 311 and second welding pins 321 are distributed, so as to facilitate welding with a plurality of counterparts, and at the same time facilitate the routing of the counterparts along the length direction of the first welding pin 311 and the second welding pin 321. For some capacitors that need to be installed at the side, the first busbar 31 and the second busbar 32 are extended from one side of the housing 1, so that full utilization can be made. The position close to the side reduces the occupied space; in another embodiment, when the first welding pin 311 and the second welding pin 321 are arranged in two rows, the groove 33 is arranged along the width direction of the first welding pin 311 and the second welding pin 321, which can facilitate the staggered space routing along the width direction of the first welding pin 311 and the second welding pin 321 after welding the opponent with the first welding pin 311 and the second welding pin 321, making the routing more beautiful, and the first busbar 31 and the second busbar 32 extend from the middle of the shell 1, which can facilitate the first busbar 31 and the second busbar 32 to avoid surrounding components and be welded to the opponent, thereby reducing the occupied space.

[0038] Further, the first welding pin 311 and the second welding pin 321 both have a first folded edge 34 and a second folded edge 35, the second folded edge 35 is vertically arranged, and the groove 33 is arranged at the second folded edge 35. It can be understood that the first folded edge 34 and the second folded edge 35 can facilitate the first welding pin 311 and the second welding pin 321 to be close to or away from each other, so that the first welding pin 311 and the second welding pin 321 form one row or two rows to match different installation environments.

[0039] Optionally, a limiting member 11 is defined on the inner wall of the housing 1 to limit the first busbar 31 and the second busbar 32. It can be understood that the limiting member 11 can be provided to facilitate positioning of the first busbar 31 and the second busbar 32 in the housing 1, thereby improving the reliability of installation and the efficiency of installing the busbars. The limiting member 11 can be a limiting groove, and the first busbar 31 and the second busbar 32 can be provided with a protruding portion that cooperates with the limiting groove to limit the position, and the limiting member 11 can be integrally formed on the housing 1.

[0040] Optionally, a plurality of mounting holes 12 are provided on the outer edge of the housing 1. It can be understood that the mounting holes 12 can facilitate the installation and fixation of the overall capacitor, thereby ensuring the reliability of the installation. The mounting holes 12 can be integrally formed on the housing 1 by injection molding.

[0041] Optionally, the gap of the housing 1 is filled with filler 5 to fill the open part of the housing 1. It can be understood that the core group 2, the busbar and the housing 1 are kept in a fixed state by filling the filler 5, so as to maintain the reliability of the connection. The filler 5 can be resin.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A busbar structure of a capacitor, characterized in that: include: Shell, core group, busbar assembly and insulation assembly; The core group is installed in the shell; The busbar assembly comprises a first busbar and a second busbar, wherein the first busbar defines a plurality of first welding pins, the first busbar is connected to an electrode surface of the core group so as to lead an electrode of the core group to the plurality of first welding pins, and the second busbar defines a plurality of second welding pins, the second busbar is connected to another electrode surface of the core group so as to lead another electrode of the core group to the plurality of second welding pins; The insulating assembly comprises a first insulating member and a second insulating member, wherein the first insulating member is arranged between the first busbar and the second busbar, and the second insulating member is pressed at the junction of the first busbar and the second busbar so that the first busbar and the second busbar are in contact with the first insulating member.

2. The busbar structure of the capacitor according to claim 1, characterized in that: The first welding needle and the second welding needle are both provided with a groove, and the groove is arranged along the length direction or the width direction of the first welding needle and the second welding needle.

3. The busbar structure of the capacitor according to claim 2, characterized in that: A plurality of the first welding needles and a plurality of the second welding needles are arranged close to each other in one row, or a plurality of the first welding needles and a plurality of the first welding needles are arranged far away from each other in two rows.

4. The busbar structure of the capacitor according to claim 2, characterized in that: When the first welding pin and the second welding pin are arranged in a row, the groove is arranged along the length direction of the first welding pin and the second welding pin, and the first bus bar and the second bus bar extend from one side of the shell; when the first welding pin and the second welding pin are arranged in two rows, the groove is arranged along the width direction of the first welding pin and the second welding pin, and the first bus bar and the second bus bar extend from the middle of the shell.

5. The busbar structure of the capacitor according to claim 2, characterized in that: The first welding needle and the second welding needle both have a first folded edge and a second folded edge, the second folded edge is vertically arranged, and the groove is arranged on the second folded edge.

6. The busbar structure of the capacitor according to claim 1, characterized in that: A limiting member is defined on the inner wall of the shell to limit the first busbar and the second busbar.

7. The busbar structure of the capacitor according to claim 1, characterized in that: The outer edge of the shell is provided with a plurality of mounting holes.

8. The busbar structure of the capacitor according to claim 1, characterized in that: The gaps in the shell are filled with fillers to make the openings of the shell filled and level.

Images