Capacitor

Abstract

The utility model provides a capacitor, which avoids the problems of product pollution and the like caused by overflowing pouring sealant, and does not need to use an extra gluing process. The capacitor comprises a capacitor shell, a packaging material and an electrode; the packaging material is filled in the capacitor shell; the lower part of the electrode is embedded in the packaging material, the part, exposed out of the packaging material, of the electrode is provided with a connecting terminal, and the connecting terminal extends in the lateral direction and extends out of the side face of the capacitor shell; the side face of the capacitor shell is provided with a glue overflowing groove located below the connecting terminal, and the two sides of the connecting terminal are located on the inner sides of the corresponding ends of the glue overflowing groove respectively.

Description

Technical Field

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

[0002] Film capacitors are widely used in electronic equipment, industrial control, new energy vehicles and other fields. Their structure is mainly composed of positive and negative busbars, capacitor core, capacitor shell and packaging materials.

[0003] Film capacitors need to be filled with epoxy resin, polyurethane and other potting glue to ensure the mechanical function, moisture-proof performance and other technical requirements of the product. When the electrode terminal lead-out position is very close to the top of the shell, the liquid potting glue will flow (overflow) from the top of the shell due to capillary action during the filling process. The potting glue outflow will result in poor product appearance or poor mechanical dimensions.

[0004] In the prior art, a common solution to the above problem is to first fill the gap between the electrode and the housing with additional sealant, but this requires an additional glue coating process, which is cumbersome and has low production efficiency. Utility Model Content

[0005] The utility model aims to provide a capacitor, solve the problems existing in the prior art, avoid the problems of product pollution caused by overflowing potting glue, and do not need to use an additional glue coating process.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] A capacitor comprises a capacitor shell, a packaging material and an electrode; the packaging material is filled in the capacitor shell; the lower part of the electrode is buried in the packaging material, and the part exposed from the packaging material is provided with a connecting terminal, and the connecting terminal extends laterally and protrudes out of the side of the capacitor shell; the side of the capacitor shell is provided with a glue overflow groove located below the connecting terminal, and the two sides of the connecting terminal are respectively located on the inner sides of the corresponding ends of the glue overflow groove.

[0008] The packaging material is made of epoxy resin, silicone or polyurethane.

[0009] The upper opening of the glue overflow groove is flush with the edge of the capacitor housing.

[0010] The connecting terminal and the upper surface of the edge of the capacitor housing are in a fitted state or a clearance fit.

[0011] A plurality of connection terminals extend from the same side surface of the capacitor housing, and the connection terminals share the same glue overflow groove.

[0012] After adopting the above technical solution, the utility model has the following technical effects:

[0013] The utility model adds a glue overflow groove in the area adjacent to the connection terminal on the capacitor housing. When the potting glue in liquid state flows (overflows), the glue overflow groove can collect the flowing potting glue, thereby preventing the potting glue from contaminating the product and also avoiding the use of an additional glue coating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the first embodiment of the utility model;

[0015] Figure 2 It is a perspective view of the second embodiment of the utility model;

[0016] Description of Figure Numbers:

[0017] 1----capacitor housing; 11---glue overflow groove; 2----packaging material; 3----connecting terminal; L----length. DETAILED DESCRIPTION

[0018] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention to be protected.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the embodiments of the present utility model, it should be understood that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only to simplify the description for the convenience of describing the embodiments of the present utility model, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present utility model.

[0023] In addition, the terms "first", "second", "third", etc. 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" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connected" 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, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected 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 utility model can be understood according to specific circumstances.

[0025] 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.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0027] In addition, the present invention provides examples of various specific processes and materials, but a person skilled in the art may be aware of the application of other processes and / or the use of other materials.

[0028] refer to Figure 1 and Figure 2 As shown, the utility model discloses a capacitor, including a capacitor housing 1, a packaging material 2 and electrodes;

[0029] The packaging material 2 is filled in the capacitor housing 1;

[0030] The lower part of the electrode is buried in the packaging material 2, and the part exposed from the packaging material 2 is provided with a connecting terminal 3, which extends laterally and protrudes out of the side of the capacitor housing 1;

[0031] The side of the capacitor housing 1 is provided with a glue overflow groove 11 below the connecting terminal 3 , and both sides of the connecting terminal 3 are respectively located inside the corresponding ends of the glue overflow groove 11 , that is, the length L of the glue overflow groove 11 covers the distance between the two sides of the connecting terminal 3 .

[0032] In some embodiments of the present invention, the packaging material 2 is made of epoxy resin, silicone or polyurethane.

[0033] In some embodiments of the present invention, the upper opening of the glue overflow groove 11 is flush with the edge of the capacitor housing 1 .

[0034] In some embodiments of the present invention, the connection terminal 3 and the upper surface of the edge of the capacitor housing 1 are in a fitted state or a clearance fit.

[0035] In some embodiments of the present invention, the portion of the electrode buried in the packaging material 2 is overlapped on the capacitor core of the capacitor to achieve electrical connection between the connecting terminal 3 and the capacitor core.

[0036] See also Figure 1 , showing the first embodiment of the utility model.

[0037] In the first embodiment, two connecting terminals 3 extend out of the side of the capacitor housing on the same side, and an independent, shorter glue overflow groove 11 is provided on the side of the capacitor housing 1 corresponding to each connecting terminal 3, and the length L of each glue overflow groove 11 covers the corresponding connecting terminal 3.

[0038] See also Figure 2 , showing the second embodiment of the utility model.

[0039] In the second embodiment, two connection terminals 3 extend out of the same side of the capacitor housing 1 , and only one longer glue overflow groove 11 is provided on the side of the capacitor housing 1 . The length L′ of the glue overflow groove 11 covers the two connection terminals 3 .

[0040] Through the above scheme, the utility model adds a glue overflow groove 11 in the area near the connecting terminal 3 on the capacitor housing 1. When the liquid potting glue flows (overflows), the glue overflow groove 11 can collect the flowing potting glue to avoid the potting glue from contaminating the product, and also avoids the use of an additional glue coating process.

[0041] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A capacitor, characterized in that: Including capacitor housing, packaging materials and electrodes; The packaging material is filled in the capacitor housing; The lower portion of the electrode is buried in the packaging material, and the portion exposed from the packaging material is provided with a connecting terminal, and the connecting terminal extends laterally and protrudes out of the side of the capacitor housing; A glue overflow groove is arranged on the side of the capacitor housing and is located below the connecting terminal. Both sides of the connecting terminal are located at the inner sides of the corresponding ends of the glue overflow groove.

2. A capacitor according to claim 1, characterized in that: The packaging material is made of epoxy resin, silicone or polyurethane.

3. A capacitor according to claim 1, characterized in that: The upper opening of the glue overflow groove is flush with the edge of the capacitor housing.

4. A capacitor according to claim 1, characterized in that: The connecting terminal and the upper surface of the edge of the capacitor housing are in a fitted state or a clearance fit.

5. A capacitor according to claim 1, characterized in that: A plurality of connection terminals extend from the same side surface of the capacitor housing, and the connection terminals share the same glue overflow groove.

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