Capacitor

Abstract

The utility model provides a capacitor. The capacitor comprises a shell, a core, a busbar and an insulating part, a cavity with an open top is defined by the shell; the core is arranged in the cavity; the busbar is provided with a connecting part capable of being connected with the electrodes of the core group and a terminal part capable of being connected with an external connecting piece, a main body of the busbar is made of aluminum, and the surface of the main body is electroplated with weldable metal; and the insulating part is suitable for separating and insulating two electrodes of the busbar. The capacitor is beneficial to lightweight design and cost control.

Description

Technical Field

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

[0002] With the rapid development of power electronics technology, the application of metallized film capacitors in industrial control, new energy, automotive electronics, rail transportation, power grid and other fields is becoming more and more extensive. At the same time, the limitations of the capacitor installation structure are becoming more and more prominent.

[0003] Currently, the industry generally uses copper busbars as capacitor electrodes. Capacitor designs use copper busbars as terminals to achieve conductive functions. Copper has excellent ductility and conductivity and is suitable for various mold processing. However, copper materials are relatively expensive and have large density parameters, which is not conducive to lightweight and cost-reducing design. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the purpose of the present invention is to provide a capacitor that is conducive to lightweight design and cost control.

[0005] To achieve the above object, the utility model provides a capacitor, which includes: a shell, a core, a busbar and an insulating member;

[0006] The housing defines a cavity with an open top;

[0007] The core is installed in the cavity;

[0008] The busbar has a connection portion that can be connected to the electrodes of the core group, and a terminal portion that can be connected to an external connector. The main body of the busbar is aluminum, and its surface is electroplated with a weldable metal;

[0009] The insulating member is suitable for isolating the two electrodes of the busbar from each other.

[0010] According to a capacitor proposed by the utility model, the weight and cost of the entire busbar are reduced by making the main body of the busbar into aluminum. By electroplating weldable metal on the aluminum, the welding performance of the busbar, the core, and the external connectors is enhanced to ensure the reliability of the connection. The capacitor is conducive to lightweight design and cost control.

[0011] In addition, the capacitor according to the above embodiment of the present invention may also have the following additional technical features:

[0012] Optionally, the busbar is plated with the weldable metal only at the connecting portion and the terminal portion.

[0013] Optionally, a filler capable of filling the cavity is also included.

[0014] Optionally, the connecting portion is in a hollow U shape.

[0015] Optionally, the terminal portion is provided with a connecting hole. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure diagram of a capacitor according to an embodiment of the present application;

[0017] Figure 2 An internal structure diagram of a capacitor according to an embodiment of the present application;

[0018] BRIEF DESCRIPTION OF DRAWINGS

[0019] The shell 1, the core 2, the busbar 3, the connecting portion 31, the terminal portion 32, the connecting hole 321, the insulating member 4, and the filler 5. DETAILED DESCRIPTION

[0020] The embodiments of the present application will be described in detail below with reference to the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0021] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application 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 application and to fully convey the scope of the present application to those skilled in the art.

[0022] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings and specific embodiments.

[0023] The following will be described with reference to Figure 1-Figure 2 The implementation of the capacitor according to the embodiments of the present application will be described in detail.

[0024] The capacitor according to the embodiments of the present application comprises a shell 1, a core 2, a busbar 3, and an insulating member 4.

[0025] Specifically, the body defines a cavity with an open top; the core 2 is installed in the cavity; the female has a connecting portion 31 connectable to the electrodes of the core 2 group, and a terminal portion 32 connectable to an external connecting member; the body of the female bus 3 is made of aluminum, and the surface of the body is plated with a solderable metal; the insulating member 4 is adapted to insulate the two electrodes of the female bus 3.

[0026] That is, the overall female bus 3 is made of aluminum to ensure electrical conductivity, and the solderable metal is plated on the aluminum to facilitate the soldering of the female bus 3 with the core 2 and the external connecting member, so that the electrodes of the core 2 can be connected from the connecting portion 31 to the terminal portion 32 of the female bus 3 to form a stable connection with the external connecting member.

[0027] Thus, the body of the female bus 3 is made of aluminum to reduce the weight and cost of the overall female bus 3, and the solderable metal is plated on the aluminum to enhance the soldering performance of the female bus 3 with the core 2 and the external connecting member, thereby ensuring the reliability of the connection. The capacitor is conducive to lightweight design and cost control.

[0028] Optionally, the female bus 3 is plated with a solderable metal only at the connecting portion 31 and the terminal portion 32. It can be understood that the above arrangement can further reduce the plating cost of the female bus 3 while ensuring the reliability of the connection between the connecting portion 31 and the core 2, and the terminal portion 32 and the external connecting member. The solderable metal can be copper or nickel.

[0029] Optionally, it further comprises a filler 5 that can fill the cavity. It can be understood that the core 2, the female bus 3, and the insulating member 4 can be filled in the cavity of the shell 1 by the filler 5, thereby enhancing the fixation of the core 2, the female bus 3, and the insulating member 4 with the shell 1, and further improving the insulation performance of the capacitor. The filler 5 can be epoxy resin, the insulating member 4 can be an insulating film, and the number of the female bus 3 can be two. The connecting portion 31 of the two female buses 3 is connected to the two electrodes of the core 2 one by one, and the terminal portion 32 of the two female buses 3 is led out of the shell 1.

[0030] Optionally, the connecting portion 31 is in the shape of a hollow U. It can be understood that the connecting portion 31 is in the shape of a hollow U, which facilitates increasing the soldering area with the core 2, thereby ensuring the reliability of the soldering of the connecting portion 31 with the core 2. The number of the core 2 can be two, and one electrode surface of each core 2 can be soldered with two connecting portions 31 of one female bus 3, which facilitates uniform distribution of current.

[0031] Optionally, the terminal portion 32 is provided with a connecting hole 321. It can be understood that the connecting hole 321 facilitates locking or soldering with the external connecting member, thereby ensuring the reliability of the connection. The number of the connecting hole 321 on the female bus 3 of the same electrode can be one.

[0032] 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 to 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 device or element referred to 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.

[0033] 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 specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0034] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0037] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A capacitor, characterized in that: include: Shell, core, busbar and insulation; The housing defines a cavity with an open top; The core is installed in the cavity; The busbar has a connection portion that can be connected to the electrodes of the core group, and a terminal portion that can be connected to an external connector. The main body of the busbar is aluminum, and its surface is electroplated with a weldable metal; The insulating member is suitable for isolating the two electrodes of the busbar from each other.

2. The capacitor according to claim 1, wherein The busbar is plated with the solderable metal only at the connection portion and the terminal portion.

3. The capacitor according to claim 1, wherein Also included is a filling material capable of filling the cavity.

4. The capacitor according to claim 1, wherein The connecting portion is U-shaped and hollow.

5. The capacitor according to claim 1, wherein The terminal portion is provided with a connection hole.

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