Capacitor

Abstract

The utility model provides a capacitor. The capacitor comprises a first core group, a second core group, a first busbar, a second busbar and a housing. The first core group is provided with a first electrode surface and a second electrode surface, the second core group is provided with a third electrode surface and a fourth electrode surface, when the first core group and the second core group are longitudinally parallel, the first electrode surface and the third electrode surface face upwards, and the second electrode surface and the fourth electrode surface face downwards, and when the first core group and the second core group are transversely parallel, the first electrode surface and the second electrode surface face downwards. The second electrode surface and the fourth electrode surface are arranged towards the front end, and the first electrode surface and the third electrode surface are arranged towards the rear end; the two first connecting parts of the first busbar are connected with the second electrode face and the fourth electrode face in a one-to-one correspondence mode so as to lead electric power to the two first terminal sets, and the two second connecting parts of the second busbar are connected with the first electrode face and the third electrode face in a one-to-one correspondence mode so as to lead the other electric power to the two second terminal sets. The capacitor is simple in internal structure and small in occupied space.

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 are increasingly used in industrial control, new energy, automotive electronics, rail transit, power grids and other fields. When the system has high power requirements, customers often need to integrate capacitors with two sets of terminals for use in dual-motor applications.

[0003] In the related art, the connection structure integrating two sets of terminals is complex and occupies a large space as a whole. Utility Model Content

[0004] 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 with a simple internal connection structure and small occupied space.

[0005] In order to achieve the above-mentioned object, the utility model proposes a capacitor, which comprises: a first core group, a second core group, a first busbar, a second busbar and a shell;

[0006] The first core group and the second core group are arranged longitudinally or transversely in the mounting cavity of the shell, the first core group has a first electrode surface and a second electrode surface, the second core group has a third electrode surface and a fourth electrode surface, when the first core group and the second core group are arranged longitudinally, the first electrode surface and the third electrode surface are arranged upward, and the second electrode surface and the fourth electrode surface are arranged downward, when the first core group and the second core group are arranged transversely, the second electrode surface and the fourth electrode surface are arranged toward the front end, and the first electrode surface and the third electrode surface are arranged toward the rear end;

[0007] The first busbar defines two first connection parts and two first terminal groups, and the second busbar defines two second connection parts and two second terminal groups. The two first connection parts are connected to the second electrode surface and the fourth electrode surface in a one-to-one correspondence to direct one electric power to the two first terminal groups, and the two second connection parts are connected to the first electrode surface and the third electrode surface in a one-to-one correspondence to direct another electric power to the two second terminal groups.

[0008] According to a capacitor proposed by the utility model, a first core group and a second core group are installed in parallel longitudinally, a first electrode surface and a third electrode surface are arranged upward, and a second electrode surface and a fourth electrode surface are arranged downward; when the first core group and the second core group are installed in parallel transversely, the second electrode surface and the fourth electrode surface are arranged toward the front end, and the first electrode surface and the third electrode surface are arranged toward the rear end; the first electrode surface and the third electrode surface are connected through a first connecting portion of a first busbar, and one electric power is led out through two first terminal groups of the first busbar, the second pole surface and the fourth pole surface are connected through a second connecting portion of a second busbar, and another electric power is led out through two second terminal groups of the second busbar; the internal structure of the capacitor is simple and occupies a small space.

[0009] In addition, a capacitor according to the above embodiment of the utility model may also have the following additional technical features:

[0010] Optionally, the first busbar includes a first part and a second part, and the first part and the second part are both provided with the first connecting portion, the first terminal group, and a lap joint connecting the first connecting portion and the first terminal group together, and the lap joint of the first part and the lap joint of the second part are connected back to back.

[0011] Furthermore, the back connection of the two overlapping parts is soldering, rivetless riveting or laser welding.

[0012] Further, when the first core group and the second core group are arranged side by side in the longitudinal direction, the overlapping part of the first part and the second part is located in the gap between the first core group and the second core group.

[0013] Optionally, the second busbar has a third section and a fourth section, the third section and the fourth section are both provided with the second connecting section and the second terminal group, and the third section and the fourth section are connected back to back via a connecting plate.

[0014] Further, when the first core group and the second core group are arranged longitudinally, the connecting plate is located at the side of the first core group and the second core group, and when the first core group and the second core group are arranged transversely, the connecting plate is located at the bottom of the first core group and the second core group.

[0015] Optionally, one of the first terminal groups and one of the second terminal groups face a first side, another of the first terminal groups and another of the second terminal groups face a second side opposite to the first side, and the first terminal groups and the second terminal groups on the same side are arranged alternately.

[0016] Optionally, the first busbar and the second busbar are converged above the first core group and the second core group and extend outside the installation cavity, the second busbar clamps the first busbar at the convergence point, and an insulating member is provided at the clamping point of the first busbar and the second busbar.

[0017] Optionally, the mounting cavity is filled with resin to seal the mounting cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of a capacitor according to the first embodiment of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of a capacitor according to the first embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first busbar and the second busbar according to the first embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first busbar according to the first embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the second busbar according to the first embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a capacitor according to the second embodiment of the utility model;

[0024] Figure 7 It is a partial structural schematic diagram of a capacitor according to the second embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the first busbar according to the second embodiment of the present utility model;

[0026] Fig. 9 This is a schematic diagram of the structure of the second busbar according to the second embodiment of the present utility model;

[0027] Fig.10 This is a schematic diagram of the structure of the first busbar and the second busbar according to the second embodiment of the present utility model;

[0028] Description of reference numerals:

[0029] A first core group 1, a first electrode surface 11, and a second electrode surface 12;

[0030] The second core group 2, the third electrode surface 21, and the fourth electrode 22;

[0031] A first busbar 3, a first portion 31, a second portion 32, a first connecting portion 33, a first terminal group 34, and a lap portion 35;

[0032] The second busbar 4, the third part 41, the fourth part 42, the second connecting portion 43, the second terminal group 44, and the connecting plate 45;

[0033] Shell 5;

[0034] Insulation 6;

[0035] Resin 7. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Reference below Figure 1-Figure 10 , the implementation of the capacitor proposed in the embodiment of the utility model is described in detail.

[0040] The capacitor according to the embodiment of the utility model comprises: a first core group 1 , a second core group 2 , a first busbar 3 , a second busbar 4 and a shell 5 .

[0041] Specifically, the first core group 1 and the second core group 2 are arranged longitudinally or transversely in the mounting cavity of the housing 5, the first core group 1 has a first electrode surface 11 and a second electrode surface 12, the second core group 2 has a third electrode surface 21 and a fourth electrode surface 22, when the first core group 1 and the second core group 2 are arranged longitudinally, the first electrode surface 11 and the third electrode surface 21 are arranged upward, the second electrode surface 12 and the fourth electrode surface 22 are arranged downward, when the first core group 1 and the second core group 2 are arranged transversely, the second electrode surface 12 and the fourth electrode surface 22 are arranged forward. The first busbar 3 is arranged at the end, and the first electrode surface 11 and the third electrode surface 21 are arranged towards the rear end; the first busbar 3 defines two first connecting parts 33 and two first terminal groups 34, and the second busbar 4 defines two second connecting parts 43 and two second terminal groups 44, the two first connecting parts 33 are connected to the second electrode surface 12 and the fourth electrode surface 22 one by one, so as to lead one electricity to the two first terminal groups 34, and the two second connecting parts 43 are connected to the first electrode surface 11 and the third electrode surface 21 one by one, so as to lead another electricity to the two second terminal groups 44.

[0042] That is, the first core group 1 and the second core group 2 can be installed in the installation cavity in parallel horizontally or vertically. When the first core group 1 and the second core group 2 are arranged vertically, the first electrode surface 11 and the third electrode surface 21 are arranged upward, and the second electrode surface 12 and the fourth electrode surface 22 are arranged downward, so that the two first connecting parts 33 are connected from the lower end of the core group to the second electrode surface 12 and the fourth electrode surface 22, and an electric force of the first core group 1 and the second core group 2 is led to the two first terminal groups 34, and at the same time, the two second connecting parts 43 are connected from the upper end of the core group to the first electrode surface 11 and the third electrode surface 21, so that the first core group 1 and the second The other power of the core group 2 is led to the two second terminal groups 44; when the first core group 1 and the second core group 2 are arranged horizontally in parallel, the second electrode surface 12 and the fourth electrode surface 22 are arranged toward the front end, and the first electrode surface 11 and the third electrode surface 21 are arranged toward the rear end, so that the two first connecting parts 33 connect the second electrode surface 12 and the fourth electrode surface 22 on the diagonally opposite sides, and lead one power of the first core group 1 and the second core group 2 to the two first terminal groups 34, and at the same time, the second connecting part 43 connects the first electrode surface 11 and the third electrode surface 21 on the diagonally opposite sides, and leads the other power of the first core group 1 and the second core group 2 to the two second terminal groups 44.

[0043] Thus, the first core group 1 and the second core group 2 are installed in parallel longitudinally, the first electrode surface 11 and the third electrode surface 21 are arranged upward, and the second electrode surface 12 and the fourth electrode surface 22 are arranged downward. When the first core group 1 and the second core group 2 are installed in parallel horizontally, the second electrode surface 12 and the fourth electrode surface 22 are arranged toward the front end, and the first electrode surface 11 and the third electrode surface 21 are arranged toward the rear end. The first electrode surface 11 and the third electrode surface 21 are connected through the first connecting portion 33 of the first busbar 3, and one electric power is led out through the two first terminal groups 34 of the first busbar 3, the second pole surface and the fourth pole surface are connected through the second connecting portion 43 of the second busbar 4, and another electric power is led out through the two second terminal groups 44 of the second busbar 4; the internal structure of the capacitor is simple and occupies a small space.

[0044] The above implementation is the most basic solution of this application, which can solve the problems raised in the background technology and achieve the purpose of this application. The following improves the above basic solution in many aspects to further improve its performance, thereby achieving better implementation effect.

[0045] Embodiment 1

[0046] Reference Figure 4-Figure 8 , for the first busbar 3, the first busbar 3 includes a first part 31 and a second part 32, the first part 31 and the second part 32 are both provided with a first connection part 33, a first terminal group 34, and a lap part 35 connecting the first connection part 33 and the first terminal group 34 together, and the lap part 35 of the first part 31 and the lap part 35 of the second part 32 are connected back to back. It can be understood that since the busbar is usually formed by stamping and bending, dividing the first busbar 3 into the first part and the second part 32 can reduce the processing difficulty of the first busbar 3, thereby reducing the processing cost, and by connecting the lap part 35 of the first part 31 and the lap part 35 of the second part 32 back to back, the two first terminal groups 34 are formed in a back-to-back orientation, thereby facilitating the same power to the two first terminal groups 34, thereby facilitating the connection requirements of the two motors.

[0047] For the connection between the first part 31 and the second part 32, the back connection of the two overlapped parts 35 is soldering, rivetless riveting or laser welding. It can be understood that after the first part 31 and the second part 32 are stamped and formed, the overlapped part 35 of the first part 31 and the overlapped part 35 of the second part 32 are connected together by soldering, rivetless riveting or laser welding, so as to facilitate the same power to be simultaneously led to the two first terminal groups 34.

[0048] Reference Figure 1-Figure 4When the first core group 1 and the second core group 2 are arranged side by side in the longitudinal direction, the overlap of the first part 31 and the second part 32 is located in the gap between the first core group 1 and the second core group 2. It can be understood that by locating the overlap of the first part 31 and the second part 32 in the gap between the first core group 1 and the second core group 2, the gap between the first core group 1 and the second core group 2 can be fully utilized, so that the first busbar 3 can lead the power of the first core group 1 and the second core group 2 in the shortest path, which is convenient for miniaturization of the overall capacitor and reduces the occupied space.

[0049] Reference Figure 5 and Fig. 9 The second busbar 4 has a third section and a fourth section 42, the third section 41 and the fourth section 42 are both provided with a second connection section 43 and a second terminal group 44, and the third section 41 and the fourth section 42 are connected in reverse through a connection plate 45. It can be understood that the connection of the third section 41 and the fourth section 42 through the connection plate 45 can lead out another electric power of the first core group 1 and the second core group 2.

[0050] Furthermore, the connecting plate 45 is located on the side of the first core group 1 and the second core group 2. It can be understood that by connecting the third part 41 and the fourth part 42 at the side through the connecting plate 45, the connecting plate 45 can avoid the first part 31 and the second part 32, thereby avoiding a short circuit; at the same time, the side space can be fully utilized to make the overall structure more compact and reduce the occupied space.

[0051] As for the distribution of the first terminal group 34 and the second terminal group 44, a first terminal group 34 and a second terminal group 44 are oriented toward the first side, another first terminal group 34 and another second terminal group 44 are oriented toward the second side opposite to the first side, and the first terminal group 34 and the second terminal group 44 on the same side are arranged in an interlaced manner. It can be understood that since new energy vehicles usually use two motors, by having a first terminal group 34 and a second terminal group 44 oriented toward the first side, and another first terminal group 34 and another second terminal group 44 oriented toward the second side opposite to the first side, the first side and the second side have terminal groups with different electrodes, which is convenient for the use of two motors, and by having the first terminal group 34 and the second terminal group 44 on the same side arranged in an interlaced manner, the two electrodes can be staggered to avoid short circuit. Among them, the first terminal group 34 and the second terminal group 44 can be arranged to have a height difference in the horizontal direction.

[0052] As for the insulation of the first busbar 3 and the second busbar 4, the first busbar 3 and the second busbar 4 are gathered above the first core group 1 and the second core group 2 and then extend to the outside of the installation cavity. The second busbar 4 clamps the first busbar 3 at the gathering place, and an insulating member 6 is provided at the clamping place of the first busbar 3 and the second busbar 4. It can be understood that by gathering the first busbar 3 and the second busbar 4 outside the installation cavity, the overall occupied space can be reduced, and it can be convenient to connect with the external circuit in the same orientation. The insulating member 6 can be provided to separate the electrodes of the first busbar 3 and the second busbar 4, thereby avoiding short circuit.

[0053] For filling the mounting cavity, the mounting cavity is filled with resin 7 to seal the mounting cavity. The core group, the housing 5 and the busbar can be sealed and fixed by filling the mounting cavity with resin 7, so that the core group, the housing 5 and the busbar are fixed more firmly.

[0054] Embodiment 2

[0055] The working principle and structure of the first and second embodiments are basically the same, and the similarities are not described in detail. The difference is that when the first core group 1 and the second core group 2 are arranged side by side in a transverse manner, the connecting plate 45 is located at the bottom of the first core group 1 and the second core group 2.

[0056] Reference Figure 6-Figure 10 When the first core group 1 and the second core group 2 are arranged side by side horizontally, the connecting plate 45 is located at the bottom of the first core group 1 and the second core group 2. It can be understood that by connecting the third part 41 and the fourth part 42 from the bottom of the first core group 1 and the second core group 2 through the connecting plate 45, the overlap of the first part 31 and the second part 32 can be effectively avoided to avoid short circuit, and at the same time, the bottom space of the first core group 1 and the second core group 2 is fully utilized to make the overall structure more compact and reduce the occupied space. Among them, the two second connecting parts 43 can also be set on the connecting plate 45 to reduce the processing difficulty of the third part 41 and the fourth part 42.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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 first core group, a second core group, a first bus bar, a second bus bar and a shell; The first core group and the second core group are arranged longitudinally or transversely in the mounting cavity of the shell, the first core group has a first electrode surface and a second electrode surface, the second core group has a third electrode surface and a fourth electrode surface, when the first core group and the second core group are arranged longitudinally, the first electrode surface and the third electrode surface are arranged upward, and the second electrode surface and the fourth electrode surface are arranged downward, when the first core group and the second core group are arranged transversely, the second electrode surface and the fourth electrode surface are arranged toward the front end, and the first electrode surface and the third electrode surface are arranged toward the rear end; The first busbar defines two first connection parts and two first terminal groups, and the second busbar defines two second connection parts and two second terminal groups. The two first connection parts are connected to the second electrode surface and the fourth electrode surface in a one-to-one correspondence to direct one electric power to the two first terminal groups, and the two second connection parts are connected to the first electrode surface and the third electrode surface in a one-to-one correspondence to direct another electric power to the two second terminal groups.

2. The capacitor according to claim 1, wherein: The first busbar includes a first part and a second part, and the first part and the second part are both provided with the first connecting portion, the first terminal group, and a lap portion connecting the first connecting portion and the first terminal group together, and the lap portion of the first part and the lap portion of the second part are connected back to back.

3. The capacitor according to claim 2, characterized in that The back connection of the two overlapping parts is soldering, rivetless riveting or laser welding.

4. The capacitor according to claim 2, wherein: When the first core group and the second core group are arranged side by side in the longitudinal direction, the overlapping portion of the first portion and the second portion is located in the gap between the first core group and the second core group.

5. The capacitor according to claim 1, wherein: The second busbar has a third part and a fourth part, the third part and the fourth part are both provided with the second connecting portion and the second terminal group, and the third part and the fourth part are connected by a connecting plate.

6. The capacitor according to claim 5, characterized in that When the first core group and the second core group are arranged side by side longitudinally, the connecting plate is located at the side of the first core group and the second core group, and when the first core group and the second core group are arranged side by side transversely, the connecting plate is located at the bottom of the first core group and the second core group.

7. The capacitor according to claim 1, wherein: One of the first terminal groups and one of the second terminal groups faces a first side, another of the first terminal groups and another of the second terminal groups faces a second side opposite to the first side, and the first terminal groups and the second terminal groups on the same side are arranged alternately.

8. The capacitor according to claim 1, wherein: The first busbar and the second busbar are combined above the first core group and the second core group and extend out of the installation cavity. The first busbar is located inside the second busbar at the combined position. An insulating member is provided between the first busbar and the second busbar.

9. The capacitor according to claim 1, wherein: The installation cavity is filled with resin to seal the installation cavity.

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