Capacitor and mounting structure thereof

Abstract

The utility model discloses a capacitor and an installation structure thereof, and the installation structure of the capacitor comprises a packaging housing and an extraction electrode. Wherein a first accommodating cavity with a first opening is formed in the packaging shell, a second accommodating cavity with a second opening is formed outside the first accommodating cavity, and a non-rotatable nut is arranged in the second accommodating cavity; the leading-out electrode is led out from the first containing cavity, a through hole is formed in the leading-out end, and the through hole and the nut are oppositely arranged so that the nut can be limited in the second containing cavity; therefore, the accommodating space for accommodating the nut is arranged outside the packaging shell, so that the extraction electrode does not need to thicken the pressing rivet nut, and the cost is reduced while the mounting torque requirement is met.

Description

Technical Field

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

[0002] In the related technologies, with the rapid development of power electronics technology, metallized film capacitors are widely used in the field of new energy vehicles. The traditional film capacitor structure is generally composed of a capacitor core (including plates, dielectrics and metal layers sprayed on the two end faces), lead electrodes (generally leads, welding pieces or busbars), packaging shells, filling resins (such as epoxy resins), etc. Among them, the lead-out end rivet nuts of the lead-out electrodes require relatively thick electrodes to meet the installation torque requirements. However, with the increasing cost reduction requirements for film capacitors in the automotive field, the mechanical strength of the traditional thin copper bar rivet nuts of film capacitors is gradually unable to meet the installation requirements. Utility Model Content

[0003] 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 installation structure, by providing a space for accommodating nuts outside the packaging shell, so that the lead-out electrode does not need to be thickened with a rivet nut, thereby meeting the installation torque requirement while reducing the cost.

[0004] The second objective of the present invention is to provide a capacitor.

[0005] To achieve the above-mentioned purpose, the first aspect of the utility model proposes a capacitor mounting structure, including a packaging shell, a first accommodating cavity with a first opening is formed in the packaging shell, a second accommodating cavity with a second opening is formed outside the first accommodating cavity, and a non-rotatable nut is arranged in the second accommodating cavity; a lead-out electrode, the lead-out electrode is led out from the first accommodating cavity, and a through hole is arranged at the lead-out end, and the through hole is arranged opposite to the nut to confine the nut in the second accommodating cavity.

[0006] According to the capacitor mounting structure of the embodiment of the utility model, a first accommodating cavity with a first opening is formed in the packaging shell, and a second accommodating cavity with a second opening is formed outside the first accommodating cavity, and a non-rotatable nut is arranged in the second accommodating cavity; the lead-out electrode is led out from the first accommodating cavity, and a through hole is arranged at the lead-out end, and the through hole and the nut are arranged opposite to each other to confine the nut in the second accommodating cavity; thus, by arranging an accommodating space for accommodating the nut outside the packaging shell, the lead-out electrode does not need to have a thickened rivet nut, thereby meeting the installation torque requirement while reducing the cost.

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

[0008] Optionally, the second accommodating cavity includes a first accommodating space and a second accommodating space, the first accommodating space is arranged closer to the second opening than the second accommodating space, and the nut is arranged in the first accommodating space.

[0009] Optionally, the first accommodating space is a cubic structure, and the second accommodating space is a cylindrical structure.

[0010] Optionally, the nut is a square nut or a hexagonal nut having an internal threaded through hole.

[0011] Optionally, the aperture of the through hole is smaller than the opening length of the first accommodating space, and larger than the aperture of the internal thread through hole of the nut.

[0012] Optionally, a capacitor core is accommodated in the first accommodating cavity and is potted with filling resin, one end of the lead-out electrode is connected to the capacitor core, and the other end of the lead-out electrode is led out of the first accommodating cavity to serve as the lead-out end.

[0013] In order to achieve the above-mentioned purpose, a second embodiment of the present invention provides a capacitor, including the above-mentioned capacitor installation structure.

[0014] The capacitor according to the embodiment of the utility model includes a capacitor mounting structure, whereby, by providing an accommodation space for accommodating the nut outside the packaging shell, the lead-out electrode does not need to have a thickened rivet nut, thereby meeting the installation torque requirement while reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a capacitor installation structure according to an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the exploded structure of the capacitor installation structure according to an embodiment of the utility model;

[0017] Figure 3 It is a schematic cross-sectional structure diagram of a capacitor installation structure according to an embodiment of the utility model.

[0018] Description of symbols

[0019] Encapsulation shell 1, first accommodating cavity 11, second accommodating cavity 12, nut 13, first accommodating space 121, second accommodating space 122;

[0020] Leading electrode 2, through hole 21;

[0021] Capacitor core 3. 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] like Figure 1-3 As shown, the capacitor installation structure of the embodiment of the utility model includes a packaging shell 1 and a lead electrode 2.

[0026] A first accommodating cavity 11 having a first opening is formed in the packaging shell 1, a second accommodating cavity 12 having a second opening is formed outside the first accommodating cavity 11, and a non-rotatable nut 13 is arranged in the second accommodating cavity 12; the lead-out electrode 2 is led out from the first accommodating cavity 11, and a through hole 21 is arranged at the lead-out end, and the through hole 21 is arranged opposite to the nut 13 to confine the nut 13 in the second accommodating cavity 12.

[0027] That is to say, by setting the nut 13 on the packaging shell 1, the existing solution of riveting the nut 13 to the lead-out electrode 2 is eliminated, and the lead-out electrode 2 is set corresponding to the nut 13 to confine the nut 13 in the second accommodating cavity 12, so as to facilitate the bolt connected with the nut 13 to pass through the through hole 21 for installation and fixation. Since the nut 13 does not need to be riveted, the lead-out electrode 2 can be relatively thin, thereby achieving the customer's high installation torque requirements at a low cost.

[0028] It should be noted that the lead-out electrode 2 may include a positive lead-out electrode and a negative lead-out electrode.

[0029] As an embodiment, the second accommodating cavity 12 includes a first accommodating space 121 and a second accommodating space 122 . The first accommodating space 121 is arranged closer to the second opening than the second accommodating space 122 . The nut 13 is arranged in the first accommodating space 121 .

[0030] As an embodiment, the non-rotatable nut 13 is movably disposed in the first accommodating space 121 .

[0031] As an embodiment, the nut 13 is a square nut or a hexagonal nut having an internal threaded through hole.

[0032] That is, the second accommodating cavity 12 has a second accommodating space 122 adapted to the bolt matched with the nut 13 and a first accommodating space 121 matched with the nut 13 , that is, the shape of the first accommodating space 121 is matched with the shape of the nut 13 .

[0033] It should be noted that the shape of the nut 13 may also be other shapes that can limit the rotation of the nut 13 , and the present invention does not make any specific limitation on this.

[0034] That is to say, the nut 13 is prevented from rotating by means of the limiting effect of the packaging shell 1, thereby achieving the high installation torque requirement of the customer at a low cost.

[0035] In addition, it should be noted that the non-rotatable nut 13 can be movably arranged in the first accommodating space 121, which means that the nut 13 can move freely up and down or left and right, and can meet the installation requirements when the size accuracy of the lead-out electrode 2 is poor, thereby reducing the processing difficulty of the lead-out electrode 2 (busbar). In other words, the movable nut structural design of the present application can effectively solve the tolerance design problem, and the thin copper busbar meets the high installation strength requirements.

[0036] As an embodiment, the aperture of the through hole 21 is smaller than the opening length of the first accommodating space 121 , and larger than the aperture of the internal thread through hole of the nut 13 .

[0037] That is to say, through the above-mentioned size restriction, the lead-out electrode 2 can not only cover the movable nut, but also allow the bolt to pass through the through hole 21 and be installed in cooperation with the nut 13.

[0038] In addition, since the second accommodating cavity 12 is arranged outside the packaging shell 1, it is not affected by the lead-out method of the lead-out electrode 2. The electrode can be used by being led out directly from the resin injection surface or by being passed around the shell and other parts.

[0039] As an embodiment, the first accommodating cavity 11 accommodates the capacitor core 3 and is potted with filling resin. One end of the lead-out electrode 2 is connected to the capacitor core 3, and the other end of the lead-out electrode is led out of the first accommodating cavity 11 to serve as a lead-out end.

[0040] In summary, according to the capacitor mounting structure of the embodiment of the utility model, a first accommodating cavity with a first opening is formed in the packaging shell, and a second accommodating cavity with a second opening is formed outside the first accommodating cavity, and a non-rotatable nut is arranged in the second accommodating cavity; the lead-out electrode is led out from the first accommodating cavity, and a through hole is arranged at the lead-out end, and the through hole and the nut are arranged opposite to each other to restrict the nut in the second accommodating cavity; thus, by arranging an accommodating space for accommodating the nut outside the packaging shell, the lead-out electrode does not need to thicken the riveted nut, thereby meeting the installation torque requirement while reducing the cost.

[0041] In addition, the utility model also proposes a capacitor, including the above-mentioned capacitor installation structure, thereby, by providing an accommodating space for accommodating nuts outside the packaging shell, the lead-out electrode does not need to have thickened rivet nuts, thereby meeting the installation torque requirements while reducing costs.

[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 capacitor mounting structure, characterized in that: include: A packaging shell, wherein a first accommodating cavity having a first opening is formed in the packaging shell, a second accommodating cavity having a second opening is formed outside the first accommodating cavity, and a non-rotatable nut is arranged in the second accommodating cavity; The lead-out electrode is led out from the first accommodating cavity, and a through hole is arranged at the lead-out end, and the through hole is arranged opposite to the nut to restrict the nut in the second accommodating cavity.

2. The capacitor mounting structure according to claim 1, characterized in that: The second accommodating cavity includes a first accommodating space and a second accommodating space. The first accommodating space is arranged closer to the second opening than the second accommodating space. The nut is arranged in the first accommodating space.

3. The capacitor mounting structure according to claim 2, characterized in that: The non-rotatable nut is movably disposed in the first accommodating space.

4. The capacitor mounting structure according to claim 3, characterized in that: The nut is a square nut or a hexagonal nut with an internal threaded through hole.

5. The capacitor mounting structure according to claim 4, characterized in that: The aperture of the through hole is smaller than the opening length of the first accommodating space, and larger than the aperture of the internal thread through hole of the nut.

6. The capacitor mounting structure according to claim 1, wherein: The first accommodating cavity accommodates a capacitor core and is potted with a filling resin. One end of the lead-out electrode is connected to the capacitor core, and the other end of the lead-out electrode is led out of the first accommodating cavity to serve as the lead-out end.

7. A capacitor, characterized in that: The invention comprises the capacitor mounting structure as claimed in any one of claims 1 to 6.

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