Capacitor

Abstract

The utility model provides a capacitor, which comprises a shell, a core group, an insulating part, a first busbar and a second busbar, a first positioning part is defined by the shell; the core group is arranged in the shell; the insulating part is arranged between the first busbar and the second busbar to separate and insulate the first busbar and the second busbar; the first busbar or / and the second busbar defines a second positioning part, the second positioning part can be clamped into or sleeved with the first positioning part so that the first busbar or / and the second busbar and the shell can be located at the relative fixed position, and the first busbar and the second busbar are connected with the two electrodes of the core group in a one-to-one correspondence mode so that the two electrodes can be led out of the shell. According to the capacitor, the overall supporting strength can be improved, and the accuracy of the positions of the extraction electrodes can be ensured.

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, metallized film capacitors have been widely used in the field of new energy vehicles. As electronic control continues to put forward the requirements for miniaturization, the dimensional accuracy and structural strength of film capacitors are also facing higher and higher requirements.

[0003] The traditional film capacitor structure is generally composed of a capacitor core (including plates, dielectrics and metal layers sprayed on both end surfaces), lead electrodes (usually leads, solder tabs or busbars), a packaging shell, a filling resin (such as epoxy resin), and an insulating part fixed with tape.

[0004] In the related art, an additional positioning tool is used to position the relative position of the lead-out electrode and the packaging shell. However, due to structural problems, the lead-out electrode can only be positioned at an upper limit in height by relying on the tool, but not at a lower limit. In addition, the lead-out electrode has a long bending path and large internal stress, and rebound is likely to occur after the tool is removed, making it impossible to guarantee the accuracy of the lead-out electrode position. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent. To this end, the purpose of the utility model is to provide a capacitor, which can improve the overall support strength and ensure the accuracy of the lead-out electrode position.

[0006] In order to achieve the above object, the utility model proposes a capacitor, which includes: a shell, a core group, an insulating member, a first busbar and a second busbar;

[0007] The housing defines a first positioning portion;

[0008] The core assembly is installed in the shell;

[0009] The insulating member is disposed between the first busbar and the second busbar to separate and insulate the two;

[0010] The first busbar and / or the second busbar define a second positioning portion, and the second positioning portion can be snapped into or inserted into the first positioning portion so that the first busbar and / or the second busbar are in a relatively fixed position with the shell, and the first busbar and the second busbar are connected to the two electrodes of the core group one by one to lead the two electrodes to the outside of the shell.

[0011] A capacitor according to the present utility model, through the cooperation of the first positioning portion of the housing and the second positioning portions of the first busbar and the second busbar, makes the relative positions of the first busbar and the second busbar and the housing fixed. This capacitor can improve the overall support strength and the accuracy of the lead electrode position, and there is no need to use an additional positioning tool for assistance.

[0012] In addition, a capacitor according to the above-mentioned embodiment of the present utility model may further have the following additional technical features:

[0013] Optionally, the first positioning portion is in a convex shape, the first positioning portion is disposed inside the housing, the second positioning portion is in a hole shape, and the second positioning portion is in socket-fit with the first positioning portion.

[0014] Optionally, the first positioning portion is in a convex shape, the first positioning portion is disposed at the outer edge of the housing, the second positioning portion is in a hole shape, the second positioning portion is disposed near the terminals of the first busbar and the second busbar, and the second positioning portion is in socket-fit with the first positioning portion.

[0015] Optionally, the first positioning portion is in a groove shape, the first positioning portion is disposed at the open mouth of the housing, the second positioning portion is in a convex shape, and the second positioning portion can be snapped into the first positioning portion.

[0016] Optionally, when the housing is a metal housing, the first positioning portion is in a convex shape and can be insulated, the housing defines a support rod, the first positioning portion is connected to the support rod, the second positioning portion is in a hole shape, and the second positioning portion is in socket-fit with the first positioning portion.

[0017] Further, when the housing is a metal housing, the first positioning portion has a first part and a second part, the first part and the second part are in a stepped distribution, and the second positioning portions of the first busbar and the second busbar are sleeved on the first part and the second part respectively.

[0018] Further, when the housing is a metal housing, a cover plate is provided at the open mouth of the housing, and the cover plate and the first positioning portion are synchronously connected to the support rod by screws. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a capacitor according to Embodiment 1 of the present utility model;

[0020] Figure 2 It is Figure 1 A cross-sectional view taken along A-A;

[0021] Figure 3 It is a schematic structural diagram of a capacitor according to Embodiment 2 of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of a capacitor according to Embodiment 3 of the present utility model;

[0023] Figure 5 It is a schematic structural diagram of a capacitor according to Embodiment 4 of the present utility model;

[0024] Figure 6 is Figure 5 a cross-sectional view along A-A;

[0025] Description of reference numerals:

[0026] Shell 1, core group 2, first busbar 3, second busbar 4, insulating part 5, first positioning part 6, first part 6a, second part 6b, second positioning part 7, support rod 8, cover plate 9, screw 10. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0028] In order to better understand the above technical solution, the exemplary embodiments of the present utility model will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model 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 utility model and to fully convey the scope of the present utility model to those skilled in the art.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0030] Below, reference is made to Figures 1 - 6 , and the implementation of the capacitor proposed in the embodiments of the present utility model will be described in detail.

[0031] The capacitor according to the embodiment of the present utility model includes: a shell 1, a core group 2, a first busbar 3, a second busbar 4, and an insulating part 5.

[0032] Specifically, the housing 1 defines a first positioning portion 6; the core group 2 is installed inside the housing 1; the insulating member 5 is disposed between the first bus bar 3 and the second bus bar 4 to insulate and separate the two; the first bus bar 3 or / and the second bus bar 4 defines a second positioning portion 7, and the second positioning portion 7 can be snapped into or sleeved into the first positioning portion 6 so that the first bus bar 3 or / and the second bus bar 4 and the housing 1 are in a relatively fixed position. The first bus bar 3 and the second bus bar 4 respectively connect two electrodes of the core group 2 to lead the two electrodes outside the housing 1.

[0033] That is to say, the core group 2 is installed inside the housing 1. The two electrodes of the core group 2 are connected by the first bus bar 3 and the second bus bar 4 and then led outside the housing 1. The first bus bar 3 and the second bus bar 4 are insulated and separated by the insulating member 5 therebetween to prevent short circuit between the two electrodes. Since the bending paths of the first bus bar 3 and the second bus bar 4 are long, through the cooperation of the first positioning portion 6 of the housing 1 and the second positioning portion 7 of the first bus bar 3 and the second bus bar 4, the positions of the first bus bar 3 and the second bus bar 4 and the relative position of the housing 1 are fixed, which is convenient for directly filling resin into the housing 1 subsequently. While ensuring the accuracy of the positions of the lead electrodes of the first bus bar 3 and the second bus bar 4, the supporting strength of the housing 1 for the first bus bar 3 and the second bus bar 4 is also enhanced, and the problems of complexity of using a positioning tooling for auxiliary production processes and deformation of the first bus bar 3 and the second bus bar 4 caused by removing the tooling are avoided.

[0034] Thus, through the cooperation of the first positioning portion 6 of the housing 1 and the second positioning portion 7 of the first bus bar 3 and the second bus bar 4, the relative positions of the first bus bar 3 and the second bus bar 4 and the housing 1 are fixed. This capacitor can improve the overall supporting strength and the accuracy of the positions of the lead electrodes, and there is no need to use an additional positioning tooling for assistance.

[0035] Embodiment 1

[0036] Such as Figure 1 and Figure 2As shown, the first positioning portion 6 is convex, the first positioning portion 6 is arranged inside the housing 1, the second positioning portion 7 is in the shape of a hole, and the second positioning portion 7 is in socket fit with the first positioning portion 6. It can be understood that through the cooperation between the convex portion of the first positioning portion 6 and the hole of the second positioning portion 7, the relative position between the second positioning portion 7 and the first positioning portion 6 can be fixed. The first positioning portion 6 can be arranged on the bottom surface inside the housing 1 and near the corners, which is convenient for avoiding the core group 2, facilitating the positioning of the first busbar 3 from the bottom, and at the same time facilitating the direct insertion of the second positioning portion 7 of the first busbar 3 into the first positioning portion 6 of the housing 1, with simple assembly. Among them, the second busbar 4 leads out the electrode by connecting from the top of the core group 2, and its bending path is short, and the lead-out electrode is not easily deformed. However, the cooperation between the convex position of the first positioning portion 6 of the housing 1 and the hole of the second positioning portion 7 of the second busbar 4 can also be used for positioning, and only the length of the first positioning portion 6 needs to be set to a position that can cooperate with the second busbar 4.

[0037] Embodiment 2

[0038] As Figure 3 shown, the first positioning portion 6 is convex, the first positioning portion 6 is arranged on the outer edge of the housing 1, the second positioning portion 7 is in the shape of a hole, the second positioning portion 7 is arranged near the terminals of the first busbar 3 and the second busbar 4, and the second positioning portion 7 is in socket fit with the first positioning portion 6. It can be understood that by arranging the first positioning portion 6 on the outer edge of the housing 1 and arranging the second positioning portion 7 near the terminals of the first busbar 3 and the second busbar 4, the position near the terminals of the first busbar 3 and the second busbar 4 can be directly positioned, thereby ensuring the accuracy of the lead-out electrode position. Among them, the first positioning portion 6 can be arranged vertically or horizontally, and the first positioning portion 6 can be set as a convex column with an inclined surface, which is convenient for the second positioning portion 7 to slide into the first positioning portion 6 from the inclined surface.

[0039] Embodiment 3

[0040] As Figure 4 shown, the first positioning portion 6 is in the shape of a groove, the first positioning portion 6 is arranged at the open mouth of the housing 1, the second positioning portion 7 is convex, and the second positioning portion 7 can be snapped into the first positioning portion 6. It can be understood that by snapping the convex position of the second positioning portion 7 into the groove position of the first positioning portion 6, it is convenient to position the vicinity of the terminals of the first busbar 3 and the second busbar 4, thereby ensuring the accuracy of the lead-out electrode positions of the first busbar 3 and the second busbar 4.

[0041] Embodiment 4

[0042] As Figure 5 and Figure 6As shown, when the housing 1 is a metal housing 1, the first positioning portion 6 is convex and can be insulated. The housing 1 defines a support rod 8. The first positioning portion 6 is connected to the support rod 8. The second positioning portion 7 is in the shape of a hole, and the second positioning portion 7 is sleeved and matched with the first positioning portion 6. It can be understood that in some special application environments, the housing 1 of the capacitor needs to be set as a metal housing 1. Through the insulation setting of the first positioning portion 6, it is possible to avoid the electrical connection between the first bus bar 3 and the second bus bar 4 and the support rod 8 of the metal housing 1, which facilitates the second positioning portion 7 to be sleeved into the first positioning portion 6 to position the first bus bar 3 and the second bus bar 4, thereby ensuring the accuracy of the electrode lead-out positions of the first bus bar 3 and the second bus bar 4. Among them, an insulating layer can be laid on the bottom inside the housing 1. The insulating layer is provided with a mating hole so that the insulating layer can be sleeved on the support rod 8. The second positioning portions 7 of the first bus bar 3 and the second bus bar 4 can be coaxially arranged and synchronously sleeved into the first positioning portion 6, so as to synchronously position the first bus bar 3 and the second bus bar 4. In addition, the first positioning portion 6 and the support rod 8 can be sleeved and matched, which is convenient for the relative fixation of the positions of the first positioning portion 6 and the support rod 8.

[0043] As Figure 5 and Figure 6 shown, when the housing 1 is a metal housing 1, the first positioning portion 6 has a first part 6a and a second part 6b. The first part 6a and the second part 6b are arranged in a stepped manner. The second positioning portions 7 of the first bus bar 3 and the second bus bar 4 are respectively sleeved on the first part 6a and the second part 6b. It can be understood that since the second positioning portion 7 is usually formed by stamping and is prone to burrs, in order to avoid contact when the second positioning portions 7 of the first bus bar 3 and the second bus bar 4 are coaxially positioned, the hole diameters of the second positioning portions 7 of the first bus bar 3 and the second bus bar 4 can be set differently and respectively matched with the first part 6a and the second part 6b. Thus, while positioning the first bus bar 3 and the second bus bar 4, the risk of short circuit is avoided. Among them, the insulating member 5 can also be provided with a through hole, and the through hole can be sleeved on the first positioning portion 6 to position the insulating member 5.

[0044] As Figure 5 and Figure 6 shown, when the housing 1 is a metal housing 1, a cover plate 9 is provided at the open mouth of the housing 1. The cover plate 9 and the first positioning portion 6 are synchronously connected to the support rod 8 by screws 10. It can be understood that through the setting of the cover plate 9, after the core group 2, the first bus bar 3, the second bus bar 4 and the housing 1 are assembled, the cover plate 9 is directly and synchronously fixed to the first positioning portion 6 and the housing 1 by screws 10, which can not only block the open mouth of the housing 1, but also position the first bus bar 3 and the second bus bar 4.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0047] In the present utility model, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations 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 a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0050] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A capacitor, characterized in that, Comprising: A housing, a core group, an insulating part, a first busbar and a second busbar; The housing defines a first positioning part; The core group is installed in the housing; The insulating part is arranged between the first busbar and the second busbar to insulate and separate the two; The first busbar and / or the second busbar defines a second positioning part, and the second positioning part can be snapped into or sleeved onto the first positioning part so that the first busbar and / or the second busbar is in a relatively fixed position with respect to the housing. The first busbar and the second busbar respectively connect two electrodes of the core group to lead the two electrodes outside the housing.

2. The capacitor according to claim 1, characterized in that, The first positioning part is in a convex shape and is arranged inside the housing, the second positioning part is in a hole shape, and the second positioning part is in socket fit with the first positioning part.

3. The capacitor according to claim 1, characterized in that, The first positioning part is in a convex shape and is arranged at the outer edge of the housing, the second positioning part is in a hole shape and is arranged near the terminals of the first busbar and the second busbar, and the second positioning part is in socket fit with the first positioning part.

4. The capacitor according to claim 1, wherein The first positioning part is in a groove shape and is arranged at the open mouth of the housing, the second positioning part is in a convex shape, and the second positioning part can be snapped into the first positioning part.

5. The capacitor according to claim 1, wherein When the housing is a metal housing, the first positioning part is in a convex shape and can be insulatedly arranged. The housing defines a support rod, the first positioning part is connected to the support rod, the second positioning part is in a hole shape, and the second positioning part is in socket fit with the first positioning part.

6. The capacitor according to claim 1, characterized in that, When the housing is a metal housing, the first positioning part has a first part and a second part, and the first part and the second part are distributed in a stepped manner. The second positioning parts of the first busbar and the second busbar are respectively sleeved onto the first part and the second part.

7. The capacitor according to claim 5, wherein When the housing is a metal housing, a cover plate is provided at the open mouth of the housing, and the cover plate and the first positioning part are synchronously connected to the support rod by screws.

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