Three-phase capacitor

Abstract

The utility model discloses a three-phase capacitor, which comprises an electrode leading-out end and a capacitor core, the capacitor core comprises a first core group and a second core group, the first core group and the second core group are connected in series through the electrode leading-out end, and a three-phase connecting terminal is led out; therefore, the two groups of cores are connected in series in the shell, and the three-phase connecting terminals are led out, so that the application end can be directly assembled, and the application space of the application end is saved.

Description

Technical Field

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

[0002] In related technologies, 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, and client application assembly has higher and higher requirements for the integration of capacitors.

[0003] The design generally adopted in the industry at present is to connect multiple cores in parallel to form a large-capacity capacitor. The capacitor has only two positive and negative poles. When the customer's application connection requires multiple capacitors to be connected in series and multi-polarity (such as three-phase polarity U / V / W) connection is required, the existing capacitor structure cannot directly meet the application. 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 three-phase capacitor, by connecting two sets of cores in series in a housing and leading out three-phase connection terminals at the same time, so that the application end can be directly assembled, thereby saving the application space of the application end.

[0005] To achieve the above-mentioned purpose, an embodiment of the utility model proposes a three-phase capacitor, comprising: an electrode lead-out terminal; a capacitor core, wherein the capacitor core comprises a first core group and a second core group, the first core group and the second core group are connected in series through the electrode lead-out terminal, and three-phase connection terminals are led out.

[0006] The three-phase capacitor proposed in the embodiment of the utility model includes an electrode lead-out terminal and a capacitor core, the capacitor core includes a first core group and a second core group, the first core group and the second core group are connected in series through the electrode lead-out terminal, and three-phase connection terminals are led out; therefore, by connecting the two groups of cores in series in the housing and leading out the three-phase connection terminals at the same time, the application end can be directly assembled, thereby saving the application space of the application end.

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

[0008] Optionally, the electrode lead-out terminal includes a first electrode lead-out terminal, a second electrode lead-out terminal and a third electrode lead-out terminal, one end of the first core group is connected to the first electrode lead-out terminal, and the other end is connected to the second electrode lead-out terminal, one end of the second core group is connected to the third electrode lead-out terminal, and the other end is connected to the second electrode lead-out terminal, so that the first core group is connected in series with the second core group through the second electrode lead-out terminal.

[0009] Optionally, the first electrode lead-out terminal, the second electrode lead-out terminal and the third electrode lead-out terminal serve as the three-phase connection terminal.

[0010] Optionally, the first core group includes four cores, and the second core group includes four cores.

[0011] Optionally, a shell is further included, and the capacitor core is arranged inside the shell.

[0012] Optionally, a potting material is further included, and the potting material is filled in the shell, and the filled three-phase connecting terminal is led out of the shell.

[0013] Optionally, the potting material is epoxy resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the lead-out structure of a three-phase capacitor according to an embodiment of the utility model;

[0015] Figure 2 A schematic diagram of the lead-out structure of a three-phase capacitor from another perspective according to an embodiment of the utility model;

[0016] Figure 3 1 is a connection equivalent circuit diagram of a three-phase capacitor according to an embodiment of the utility model. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] 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.

[0020] The three-phase capacitor according to the embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0021] like Figure 1-2As shown, the three-phase capacitor proposed in the embodiment of the utility model includes an electrode lead-out terminal 1 and a capacitor core 2.

[0022] The capacitor core 2 includes a first core group 21 and a second core group 22 . The first core group 21 and the second core group 22 are connected in series through the electrode lead-out terminal 1 , and three-phase connection terminals are led out.

[0023] That is, the two groups of cores are connected in series through the electrode lead-out terminal 1, and three polarity terminals are led out.

[0024] As an embodiment, the electrode lead-out terminal 1 includes a first electrode lead-out terminal 11, a second electrode lead-out terminal 12 and a third electrode lead-out terminal 13, one end of the first core group 21 is connected to the first electrode lead-out terminal 11, and the other end is connected to the second electrode lead-out terminal 12, one end of the second core group 22 is connected to the third electrode lead-out terminal 13, and the other end is connected to the second electrode lead-out terminal 12, so that the first core group 21 is connected in series with the second core group 22 through the second electrode lead-out terminal 12.

[0025] As an embodiment, the first electrode lead-out terminal 11 , the second electrode lead-out terminal 12 and the third electrode lead-out terminal 13 serve as three-phase connection terminals.

[0026] That is to say, the middle common terminal of the two groups of cores connected in series and the first electrode lead-out terminal 11 and the third electrode lead-out terminal 13 at both ends are led out to serve as three polarity terminals (U / V / W), so as to be directly assembled with the client.

[0027] As an embodiment, the first core group 21 includes four cores, and the second core group 22 includes four cores.

[0028] It should be noted that the number of cores included in the core group is set according to actual needs, and the present utility model does not make any specific limitation on this.

[0029] As an embodiment, the three-phase capacitor further includes a casing, and the capacitor core 2 is arranged inside the casing.

[0030] As an embodiment, the three-phase capacitor further includes a potting material, the potting material is filled in the housing, and the filled three-phase connection terminals are led out of the housing.

[0031] As an embodiment, the potting material is epoxy resin.

[0032] That is to say, two sets of cores are integrated in the same housing, and the three-phase connection terminals are led out of the housing to achieve multi-polarity connection, thereby increasing the design integration of the capacitor by optimizing the internal electrical connection and saving application space at the user end.

[0033] In addition, the equivalent circuit diagram of the internal connection of the capacitor is as follows Figure 3 As shown, C1 represents the first core group, C2 represents the second core group, C1 and C2 are connected in series, and the three lead-out polarity terminals are represented by U\V\W, wherein V is the common terminal of the first core group and the second core group.

[0034] To summarize, the three-phase capacitor proposed in accordance with the embodiment of the utility model includes an electrode lead-out terminal and a capacitor core, the capacitor core includes a first core group and a second core group, the first core group and the second core group are connected in series through the electrode lead-out terminal, and three-phase connection terminals are led out; thus, by connecting the two groups of cores in series in the outer casing and leading out the three-phase connection terminals at the same time, the application end can be directly assembled, thereby saving the application space of the application end.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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 three-phase capacitor, characterized in that: include: Electrode lead terminal; The capacitor core comprises a first core group and a second core group, wherein the first core group and the second core group are connected in series through the electrode lead-out end and lead out three-phase connection terminals.

2. The three-phase capacitor according to claim 1, characterized in that: The electrode lead-out terminals include a first electrode lead-out terminal, a second electrode lead-out terminal and a third electrode lead-out terminal. One end of the first core group is connected to the first electrode lead-out terminal, and the other end is connected to the second electrode lead-out terminal. One end of the second core group is connected to the third electrode lead-out terminal, and the other end is connected to the second electrode lead-out terminal, so that the first core group is connected in series with the second core group through the second electrode lead-out terminal.

3. The three-phase capacitor according to claim 2, characterized in that: The first electrode lead-out terminal, the second electrode lead-out terminal and the third electrode lead-out terminal serve as the three-phase connection terminals.

4. The three-phase capacitor according to claim 1, characterized in that: The first core group includes four cores, and the second core group includes four cores.

5. The three-phase capacitor according to any one of claims 1 to 4, characterized in that: The utility model also comprises a housing, wherein the capacitor core is arranged inside the housing.

6. The three-phase capacitor according to claim 5, characterized in that: It also includes a potting material, which is filled in the shell, and the filled three-phase connecting terminal is led out of the shell.

7. The three-phase capacitor according to claim 6, characterized in that: The potting material is epoxy resin.

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