Capacitor

Abstract

The utility model discloses a capacitor which comprises a capacitor core, an electrode leading-out terminal and an electroplating connecting terminal, and the electrode leading-out terminal is connected with the capacitor core. And the electroplating connecting terminal is welded at the end part of the electrode leading-out terminal by adopting ultrasonic waves, so that the electroplating connecting terminal is electrically connected with the electrode leading-out terminal, and the condition that the electroplating connecting terminal is thermally damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a capacitor capable of avoiding thermal damage to special electroplated terminals. 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. At the same time, the failure safety problem of capacitors is becoming more and more prominent.

[0003] At present, the integration trend of various components in the industry is increasing, and the capacitor lead electrodes also appear in application environments that require high current and strong power transmission. Due to the high conductivity and thermal conductivity of the silver plating, there is a demand for local silver plating of the capacitor electrode terminals. This connection method will have the following problems: the capacitor electrode can be electroplated in the case of integrated processing, which can achieve local plating, but since the electroplating is only in a small local area, it will incur a higher processing cost; if the terminal is independently processed and electroplated before being connected to the main body, soldering is usually used to achieve physical connection, but high-temperature heat diffusion will occur during the welding process, which will cause irreversible contamination to the plating, and this is most obvious for the capacitor electrode. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, one purpose of the utility model is to provide a capacitor, which connects the electroplated connection terminal to the end of the electrode lead terminal by ultrasonic welding, so as to achieve effective connection without adding an additional heat source.

[0005] To achieve the above-mentioned purpose, a capacitor proposed in an embodiment of the utility model includes: a capacitor core; an electrode lead terminal, which is connected to the capacitor core; and an electroplating connection terminal, which is ultrasonically welded to the end of the electrode lead terminal so as to be electrically connected to the electrode lead terminal.

[0006] The capacitor proposed in the embodiment of the utility model includes a capacitor core, electrode lead terminals and electroplating connection terminals, and the electrode lead terminals are connected to the capacitor core; the electroplating connection terminals are ultrasonically welded to the ends of the electrode lead terminals so as to be electrically connected to the electrode lead terminals, thereby avoiding thermal damage to the electroplating connection terminals.

[0007] In addition, the capacitor proposed above according to the embodiment of the utility model may also have the following additional technical features:

[0008] Optionally, the electrode lead terminal includes a first electrode lead terminal and a second electrode lead terminal, the electroplating connection terminal includes a first electroplating connection terminal and a second electroplating connection terminal, the first electroplating connection terminal is connected to the end of the first electrode lead terminal by ultrasonic welding, and the second electroplating connection terminal is connected to the end of the second electrode lead terminal by ultrasonic welding.

[0009] Optionally, a silver layer is electroplated on the surface of the electroplated connecting terminal.

[0010] Optionally, a shell is further included, and the capacitor core is arranged inside the shell.

[0011] Optionally, a potting material is further included, and the potting material is filled in the shell.

[0012] Optionally, the potting material is epoxy resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of a capacitor according to an embodiment of the utility model;

[0014] Figure 2 The figure is a schematic diagram of the exploded structure of a capacitor according to an embodiment of the utility model.

[0015] Description of symbols

[0016] Shell 1;

[0017] Electrode lead terminal 2, first electrode lead terminal 21, second electrode lead terminal 22;

[0018] Capacitor core 3;

[0019] Electroplating connection terminal 4, first electroplating connection terminal 41, second electroplating connection terminal 42;

[0020] Potting compound 5. DETAILED DESCRIPTION

[0021] 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.

[0022] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although 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.

[0023] 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.

[0024] The capacitor according to the embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0025] like Figure 1-2 As shown, the capacitor proposed in the embodiment of the utility model includes a capacitor core 3, an electrode lead terminal 2 and a plating connection terminal 4.

[0026] The electrode lead terminal 2 is connected to the capacitor core 3 ; the electroplated connecting terminal 4 is ultrasonically welded to the end of the electrode lead terminal 2 so as to be electrically connected to the electrode lead terminal 2 .

[0027] That is to say, in the case where the electroplated connecting terminal 4 cannot be connected as a whole and the soldering combination suffers from thermal damage, the present application can avoid thermal damage to fewer parts without adding additional heat sources by using a spatial connection method using ultrasonic welding.

[0028] As an embodiment, the electrode lead terminal 2 includes a first electrode lead terminal 21 and a second electrode lead terminal 22, and the electroplating connection terminal 4 includes a first electroplating connection terminal 41 and a second electroplating connection terminal 42. The first electroplating connection terminal 41 is connected to the end of the first electrode lead terminal 21 by ultrasonic welding, and the second electroplating connection terminal 42 is connected to the end of the second electrode lead terminal 22 by ultrasonic welding.

[0029] That is to say, the capacitor has positive and negative electrode lead terminals 2. In order to be suitable for the application environment of high current and strong power transmission, both ends are extended and connected with electroplated connection terminals by ultrasonic welding, so as to avoid thermal damage and achieve effective connection.

[0030] As an embodiment, a silver layer is electroplated on the surface of the electroplated connecting terminal 4 .

[0031] That is to say, the electroplated connection terminal 4 is an electroplated silver terminal. It should be noted that in addition to the electroplated silver, it can also be other metals with conductive properties, and the present application does not make specific limitations on this.

[0032] As an embodiment, the capacitor further includes a housing 1 , and the capacitor core 3 is arranged inside the housing 1 .

[0033] As an embodiment, the capacitor further includes a potting material 5 , and the potting material 5 is filled in the housing 1 .

[0034] As an embodiment, the potting material 5 is epoxy resin.

[0035] That is, the capacitor includes a housing 1, a capacitor core 3 and two electrode outputs connected to the capacitor core 3 so as to form an energy communication channel with an external interface, and the potting material 5 realizes the sealing of the capacitor.

[0036] To summarize, the capacitor proposed in accordance with the embodiment of the utility model includes a capacitor core, electrode lead terminals and electroplating connection terminals, wherein the electrode lead terminals are connected to the capacitor core; the electroplating connection terminals are ultrasonically welded to the ends of the electrode lead terminals so as to be electrically connected to the electrode lead terminals, thereby avoiding thermal damage to the electroplating connection terminals.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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 capacitor, characterized in that: include: Capacitor core; An electrode lead terminal connected to the capacitor core; The electroplating connection terminal is ultrasonically welded to the end of the electrode lead terminal so as to be electrically connected to the electrode lead terminal.

2. The capacitor according to claim 1, wherein: The electrode lead terminal includes a first electrode lead terminal and a second electrode lead terminal, and the electroplating connection terminal includes a first electroplating connection terminal and a second electroplating connection terminal, the first electroplating connection terminal is connected to the end of the first electrode lead terminal by ultrasonic welding, and the second electroplating connection terminal is connected to the end of the second electrode lead terminal by ultrasonic welding.

3. The capacitor according to claim 2, characterized in that A silver layer is electroplated on the surface of the electroplated connecting terminal.

4. The capacitor according to claim 1, wherein A housing is also included, wherein the capacitor core is arranged inside the housing.

5. The capacitor according to claim 4, characterized in that A potting material is also included, and the potting material is filled in the shell.

6. The capacitor according to claim 5, characterized in that The potting material is epoxy resin.

Images