Capacitor

Abstract

The utility model discloses a capacitor, which comprises a shell, a limiting piece and an insulating medium layer, and is characterized in that a first accommodating cavity with a first opening is formed in the shell; the limiting piece forms a second accommodating cavity with a second opening, a plurality of capacitor cores are arranged in the second accommodating cavity, and the limiting piece is arranged in the first accommodating cavity to limit the relative positions of the capacitor cores and the shell; the insulating dielectric layer is arranged between the leading-out electrodes which are in contact with each other, a leading-out end is further arranged on the insulating dielectric layer, and the leading-out end extends out of the first accommodating cavity; therefore, the internal insulation paper or small parts are exposed, so that the condition of neglected loading or wrong loading is prevented.

Description

Technical Field

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

[0002] In related technologies, with the rapid development of power electronics technology, metallized film capacitors have been widely used in the field of new energy vehicles. However, with the continuous improvement of power density requirements in the automotive field, the structural design of capacitors has become more and more complex, and there are more and more small parts. The traditional film capacitor structure generally encapsulates the capacitor core, insulating paper, small parts, etc. inside the shell by filling resin. Since the insulating paper and other small parts have been covered by resin after encapsulation, it is impossible to confirm whether they are missing or installed incorrectly. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the above technology to at least a certain extent. To this end, one purpose of the utility model is to provide a capacitor, which can prevent leakage or wrong installation by exposing internal insulating paper or small parts.

[0004] To achieve the above-mentioned purpose, a capacitor proposed in an embodiment of the utility model includes: a shell, a first accommodating cavity with a first opening is formed in the shell; a limit member, the limit member forms a second accommodating cavity with a second opening, a plurality of capacitor cores are arranged in the second accommodating cavity, the limit member is arranged in the first accommodating cavity to limit the relative position of the capacitor core and the shell; an insulating dielectric layer, the insulating dielectric layer is arranged between contacting lead electrodes, and a lead end is also arranged on the insulating dielectric layer, and the lead end extends out of the first accommodating cavity.

[0005] According to the embodiment of the utility model, the capacitor proposed includes a shell, a limiter and an insulating dielectric layer, wherein a first accommodating cavity with a first opening is formed in the shell; the limiter forms a second accommodating cavity with a second opening, and a plurality of capacitor cores are arranged in the second accommodating cavity, and the limiter is arranged in the first accommodating cavity to limit the relative position of the capacitor core and the shell; the insulating dielectric layer is arranged between contacting lead electrodes, and a lead end is also arranged on the insulating dielectric layer, and the lead end extends out of the first accommodating cavity; thus, by exposing the internal insulating paper or small parts, leakage or wrong installation is prevented.

[0006] In addition, the capacitor proposed above according to the embodiment of the utility model may also have the following additional technical features:

[0007] Optionally, a groove is provided in the first accommodating cavity of the shell, a connecting member matched with the groove is provided on the limiting member, and the connecting member is arranged in the groove.

[0008] Optionally, the groove is arranged at the first opening, and has a third opening at the first opening.

[0009] Optionally, the connecting member extends out of the first accommodating cavity.

[0010] Optionally, the insulating medium layer is insulating paper.

[0011] Optionally, the plurality of capacitor cores are encapsulated in the first accommodating cavity using a potting material.

[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 is a schematic diagram of the exploded structure of a capacitor according to an embodiment of the utility model;

[0015] Figure 3 is a structural schematic diagram of a capacitor according to an embodiment of the utility model;

[0016] Figure 4 The figure is a schematic diagram of the exploded structure of a capacitor according to an embodiment of the utility model.

[0017] Description of symbols

[0018] Shell 1, first accommodating cavity 11, groove 12, third opening 121;

[0019] Limiting member 2, second accommodating cavity 21, connecting member 22;

[0020] Capacitor core 3;

[0021] Insulating dielectric layer 4 and lead end 41 . DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] The capacitor according to the embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, the capacitor provided in the embodiment of the utility model includes a housing 1, a limiting member 2 and an insulating medium layer 4.

[0027] Among them, a first accommodating cavity 11 with a first opening is formed in the shell 1; the limiting member 2 forms a second accommodating cavity 21 with a second opening, and a plurality of capacitor cores 3 are arranged in the second accommodating cavity 21. The limiting member 2 is arranged in the first accommodating cavity 11 to limit the relative position of the capacitor core 3 and the shell 1; the insulating dielectric layer 4 is arranged between the contacting lead electrodes, and a lead end 41 is also arranged on the insulating dielectric layer 4, and the lead end 41 extends out of the first accommodating cavity 11.

[0028] It should be noted that the relative positions of the plurality of capacitor cores 3 and the outer shell 1 are limited by the limiting member 2, so that the plurality of capacitor cores 3 can be positioned by the limiting member 2 to be stably placed in the first accommodating cavity 11 of the outer shell 1; in addition, a lead-out terminal 41 is provided on the insulating dielectric layer 4, so that the lead-out terminal 41 extends out of the first accommodating cavity 11; thus, after the insulating dielectric layer 4 is encapsulated inside the outer shell by filling resin, the lead-out terminal 41 is exposed, and the AOI method can be used to detect whether the insulating dielectric layer 4 is missing.

[0029] As an embodiment, a groove 12 is provided in the first accommodating cavity 11 of the housing, a connecting member 22 adapted to the groove 12 is provided on the limiting member 2 , and the connecting member 22 is disposed in the groove 12 .

[0030] As an embodiment, the groove 12 is disposed at the first opening, and has a third opening 121 at the first opening.

[0031] As an embodiment, the connecting member extends out of the first accommodating cavity.

[0032] It should be noted that in order to limit the relative positions of multiple capacitor cores 3 and the housing 1, the present application arranges a connector 22 on the limit member 2, and arranges a groove 12 in the first accommodating cavity 11, and arranges a third opening 121 on the groove 12, so that the connector 22 can enter the groove 12 through the third opening 121 and adapt to it, and extend out of the first accommodating cavity 11 after adaptation, thereby making a positioning or local glue reduction mark at the mouth of the housing 1 to effectively check whether it is installed incorrectly.

[0033] The limiting member 2 may be a plastic member, which is not specifically limited in the present application.

[0034] As an embodiment, the insulating medium layer 4 is insulating paper.

[0035] As an embodiment, a plurality of capacitor cores 3 are encapsulated in the first accommodation cavity 22 by using a potting material.

[0036] As an embodiment, the potting material is epoxy resin.

[0037] To summarize, the capacitor proposed according to the embodiment of the utility model includes a shell, a limiter and an insulating dielectric layer, a first accommodating cavity with a first opening is formed in the shell; the limiter forms a second accommodating cavity with a second opening, a plurality of capacitor cores are arranged in the second accommodating cavity, and the limiter is arranged in the first accommodating cavity to limit the relative position of the capacitor core and the shell; the insulating dielectric layer is arranged between contacting lead electrodes, and a lead end is also arranged on the insulating dielectric layer, and the lead end extends out of the first accommodating cavity; thus, by exposing the internal insulating paper or small parts, leakage or wrong installation is prevented.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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: A housing, wherein a first accommodating cavity having a first opening is formed in the housing; A stopper, wherein the stopper forms a second accommodating cavity having a second opening, a plurality of capacitor cores are arranged in the second accommodating cavity, and the stopper is arranged in the first accommodating cavity to limit the relative position of the capacitor core and the housing; An insulating dielectric layer is disposed between the contacting lead electrodes, and a lead end is also disposed on the insulating dielectric layer, and the lead end extends out of the first accommodating cavity.

2. The capacitor according to claim 1, wherein: A groove is arranged in the first accommodating cavity of the shell, a connecting piece matched with the groove is arranged on the limiting piece, and the connecting piece is arranged in the groove.

3. The capacitor according to claim 2, characterized in that The groove is disposed at the first opening and has a third opening at the first opening.

4. The capacitor according to claim 3, characterized in that The connecting member extends out of the first accommodating cavity.

5. The capacitor according to claim 1, wherein: The insulating medium layer is insulating paper.

6. The capacitor according to claim 1, wherein: The plurality of capacitor cores are encapsulated in the first accommodating cavity by using a potting material.

7. The capacitor according to claim 6, wherein: The potting material is epoxy resin.

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