Capacitor

Abstract

According to the capacitor provided by the utility model, the output busbar is integrated in the capacitor, so that the assembly process of an inverter manufacturer is simplified. The capacitor comprises a capacitor shell with a built-in capacitor core, a packaging material filled in the capacitor shell, and a positive pole piece, a negative pole piece and a plurality of output pole pieces which are embedded in the packaging material, the adjacent surfaces of the positive pole piece, the negative pole piece and the output pole piece II are separated by insulating paper; the positive pole piece and the negative pole piece are respectively connected to two ends of the capacitor core and are respectively provided with a plurality of positive terminals and negative terminals which are exposed out of the packaging material; the output pole piece is provided with a first output terminal used for being connected with a single device and a second output terminal used for being connected with the positive terminal or the negative terminal.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a capacitor which requires an external output busbar to be connected in parallel with a monomer device. Background Art

[0002] Film capacitors are widely used in electronic equipment, industrial control, automobiles and other fields.

[0003] The inverter in new energy vehicles converts the direct current of the battery into three-phase alternating current used by the motor. Capacitors are needed in this circuit to smooth and filter the output voltage of the rectifier.

[0004] Conventional designs all use packaged power modules, but some inverter manufacturers choose single-package MOSFETs and achieve the required power by connecting multiple devices in parallel. The advantage of this solution is that the number of single devices can be adjusted very flexibly according to the required power, but it is necessary to add additional output busbars during the assembly process to connect the output ends of all single devices. The assembly process is relatively complicated, and the output busbar will also take up additional installation space, which is the pain point of the current capacitor and single device parallel connection requiring an external output busbar. Utility Model Content

[0005] The utility model aims to provide a capacitor to solve the problems existing in the prior art, integrate the output busbar into the interior of the capacitor, and simplify the assembly process of the inverter manufacturer.

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

[0007] A capacitor comprises a capacitor shell with a built-in capacitor core, a packaging material filled in the capacitor shell, and a positive electrode sheet, a negative electrode sheet and a plurality of output electrode sheets buried in the packaging material; adjacent surfaces of the positive electrode sheet, the negative electrode sheet and the output electrode sheet are separated by insulating paper; the positive electrode sheet and the negative electrode sheet are respectively connected to the two ends of the capacitor core, and are respectively provided with a plurality of positive terminals and negative terminals exposed from the packaging material; the output electrode sheet is provided with a first output terminal for connecting a monomer device, and a second output terminal for connecting the positive terminal or the negative terminal.

[0008] The number of the output pole pieces is three.

[0009] Preferably, the positive terminal, the negative terminal and the second output terminal form a terminal group, with one positive terminal, one negative terminal and one or two second output terminals as one terminal group, and several groups are arranged at equal intervals along the same straight line.

[0010] Preferably, the first output terminal corresponds to five terminal groups, and the first output terminal is connected to the second output terminal of the corresponding terminal group, and the connection point is buried in the packaging material.

[0011] Preferably, the output electrode piece further includes a connecting piece, which is buried in the packaging material and has two ends connected to the first output terminal and the second output terminal respectively.

[0012] The packaging material is made of epoxy resin, silicone or polyurethane.

[0013] After adopting the above technical solution, the utility model has the following technical effects:

[0014] The utility model integrates the output pole piece in the capacitor, buries it in the packaging material, and forms a whole with the capacitor. The output pole piece is provided with a first output terminal and a second output terminal. During the assembly process, the inverter manufacturer can connect the first output terminal to the single device, and connect the second output terminal to the positive terminal and the negative terminal as needed, so as to realize the parallel connection of the capacitor and the single device. During the assembly process, it is no longer necessary to install and fix an additional output busbar, which can simplify the assembly process of the inverter manufacturer and improve efficiency. At the same time, it can also reduce space occupation, which is beneficial to product design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of a specific embodiment of the utility model;

[0016] Figure 2 A three-dimensional diagram of an output pole piece of a specific embodiment of the utility model;

[0017] Description of Figure Numbers:

[0018] 1----capacitor housing; 2----packaging material; 3----output pole piece; 31---first output terminal; 32---second output terminal; 33---connecting piece; 4----insulating paper; 5----positive terminal; 6----negative terminal. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] refer to Figure 1 and Figure 2 As shown, the utility model discloses a capacitor, comprising a capacitor housing 1 with a capacitor core built in, a packaging material 2 filled in the capacitor housing 1, and a positive electrode sheet, a negative electrode sheet and a plurality of output electrode sheets 3 buried in the packaging material 2; adjacent surfaces of the positive electrode sheet, the negative electrode sheet and the output electrode sheet 3 are separated by insulating paper 4;

[0030] The positive electrode sheet and the negative electrode sheet are respectively connected to the two ends of the capacitor core, and are respectively provided with a plurality of positive terminals 5 and negative terminals 6 exposed from the packaging material 2;

[0031] The output electrode piece 3 is provided with a first output terminal 31 for connecting to a single device, and a second output terminal 32 for connecting to a positive terminal 5 or a negative terminal 6 .

[0032] Specific embodiments of the present utility model are shown below.

[0033] The number of the output pole pieces 3 is three to correspond to the three-phase output, and the number of the first output terminals 31 is also three.

[0034] Furthermore, the positive terminal 5, the negative terminal 6 and the second output terminal 32 are a terminal group consisting of one positive terminal 5, one negative terminal 6 and one or two second output terminals 32, and a plurality of groups are arranged at equal intervals along the same straight line. After grouping, the positive terminal 5 and the negative terminal 6 of each group can correspond to the second output terminal 32, which is convenient for connection during assembly. In this embodiment, the number of the second output terminals 32 in each terminal group is two.

[0035] Secondly, the first output terminal 31 corresponds to the five terminal groups. The first output terminal 31 is connected to the second output terminal 32 of the corresponding terminal group. The connection is buried in the packaging material 2 to avoid exposure, which plays a protective role and improves the safety of the product.

[0036] Furthermore, the output electrode 3 further includes a connecting piece 33 . The connecting piece 33 is buried in the packaging material 2 , and two ends of the connecting piece 33 are respectively connected to the first output terminal 31 and the second output terminal 32 .

[0037] The packaging material 2 is made of epoxy resin, silicone or polyurethane.

[0038] Through the above scheme, the utility model integrates the output pole piece 3 in the capacitor, buries it in the packaging material 2, and forms a whole with the capacitor, and the output pole piece 3 is provided with a first output terminal 31 and a second output terminal 32. During the assembly process, the inverter manufacturer can connect the first output terminal 31 with the single device, and connect the second output terminal 32 with the positive terminal 5 and the negative terminal 6 as needed, so as to realize the parallel connection of the capacitor and the single device. During the assembly process, it is no longer necessary to install and fix an additional output busbar, which can simplify the assembly process of the inverter manufacturer and improve efficiency. At the same time, it can also reduce space occupation, which is beneficial to product design.

[0039] 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: It comprises a capacitor shell with a built-in capacitor core, a packaging material filled in the capacitor shell, and a positive electrode sheet, a negative electrode sheet and a plurality of output electrode sheets buried in the packaging material; adjacent surfaces of the positive electrode sheet, the negative electrode sheet and the output electrode sheet are separated by insulating paper; The positive electrode sheet and the negative electrode sheet are respectively connected to the two ends of the capacitor core, and are respectively provided with a plurality of positive terminals and negative terminals exposed from the packaging material; The output electrode piece is provided with a first output terminal for connecting to a single device, and a second output terminal for connecting to the positive terminal or the negative terminal.

2. The capacitor according to claim 1, wherein: The number of the output pole pieces is three.

3. The capacitor according to claim 2, wherein: The positive terminal, the negative terminal and the second output terminal form a terminal group with one positive terminal, one negative terminal and one or two second output terminals, and a plurality of groups are arranged at equal intervals along the same straight line.

4. The capacitor according to claim 3, wherein: The first output terminal corresponds to the five terminal groups, and the first output terminal is connected to the second output terminal of the corresponding terminal group, and the connection point is buried in the packaging material.

5. The capacitor according to claim 4, wherein: The output pole piece further includes a connecting piece, which is buried in the packaging material and has two ends connected to the first output terminal and the second output terminal respectively.

6. The capacitor according to claim 1, wherein: The packaging material is made of epoxy resin, silicone or polyurethane.

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