Capacitor assembly

Abstract

The utility model provides a capacitor assembly, which comprises a plurality of capacitor modules, the plurality of capacitor modules are connected in sequence to form the capacitor assembly, and each capacitor module comprises a capacitor with a connecting end and a fixed end which are arranged oppositely; the busbar is arranged at the connecting ends of the plurality of capacitors, and the plurality of capacitors are electrically connected through the busbar; the base is arranged at the fixed ends of the plurality of capacitors, the plurality of capacitors are fixed on the base, connecting pieces are arranged on the side edges of the base, and the connecting pieces on the corresponding side edges of two adjacent bases are arranged in a staggered manner. According to the technical scheme of the utility model, the problem that the current path is influenced by the large overall size of the capacitor assembly in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to a capacitor component. Background Art

[0002] At present, capacitor components are widely used in the power electronics industry, especially in rectifier modules. For capacitors with large volume and capacity, especially electrolytic capacitors, in the medium and high voltage fields, in order to ensure capacitor safety and improve the reliability and convenience of capacitor installation, capacitor components are usually divided into multiple capacitor modules, multiple capacitor modules are fixed inside the cabinet, and then busbars are used to electrically connect the multiple capacitor modules.

[0003] In the prior art, in order to fix the capacitor module in the cabinet, a connection structure is set on the capacitor module. This will cause the overall volume of the capacitor assembly to increase after multiple capacitor modules are connected, increase the busbar connection length, increase the current path distance, increase the current impedance, and increase the voltage drop, affecting the electrical performance of the capacitor assembly. Utility Model Content

[0004] The utility model provides a capacitor assembly to solve the problem in the prior art that the capacitor assembly has a large overall volume and affects the current path.

[0005] The utility model provides a capacitor assembly, which comprises a plurality of capacitor modules. The plurality of capacitor modules are connected in sequence to form the capacitor assembly. The capacitor module comprises: a capacitor having a connecting end and a fixed end that are relatively arranged; a busbar that is arranged at the connecting ends of the plurality of capacitors, and the plurality of capacitors are electrically connected through the busbar; a base that is arranged at the fixed ends of the plurality of capacitors, and the plurality of capacitors are fixed on the base. A connecting piece is arranged on a side of the base, and the connecting pieces on the corresponding sides of two adjacent bases are staggered.

[0006] Furthermore, a plurality of connectors are provided. When two capacitor modules are connected, a plurality of connectors on the side of one capacitor module are spaced apart from each other to form a receiving space. The corresponding connectors on the other capacitor module are located in the receiving space.

[0007] Furthermore, a plurality of connection terminals are arranged on the busbar, and when a plurality of capacitor modules are connected to each other, a plurality of connection terminals at the connection points of two adjacent busbars are arranged in one-to-one correspondence and overlap each other.

[0008] Furthermore, the capacitor assembly also includes a busbar support column, which is arranged between the base and the busbar and is used to assist in supporting the busbar.

[0009] Furthermore, the busbar support column is made of insulating material, and / or the base is made of insulating material.

[0010] Furthermore, the mounting hole is arranged corresponding to the fixed end, and a mounting groove is arranged on a side of the base away from the capacitor, the mounting groove is connected to the mounting hole, the mounting groove is used to accommodate a fastener, and the capacitor is fixedly connected to the base through the fastener.

[0011] Furthermore, the mounting groove has a first hole segment and a second hole segment which are connected to each other, the first hole segment is arranged close to the capacitor, the mounting hole is arranged in the first hole segment, the diameter of the second hole segment is larger than the diameter of the first hole segment, and when the fastener is arranged in the mounting groove, there is a gap between the inner wall of the second hole segment and the outer wall of the fastener.

[0012] Furthermore, the capacitor assembly also includes a windshield, which extends along the connection direction of the multiple capacitor assemblies. A heat dissipation channel is formed between two windshields, and the multiple capacitors are located in the heat dissipation channel.

[0013] Furthermore, the windshield has a connecting edge and a free edge that are relatively arranged, and a plug-in groove is also arranged on the base, the connecting edge of the windshield is plugged into the plug-in groove, a flange structure is arranged on the free edge, and a plug-in hole is arranged on the base, and the capacitor assembly also includes a windshield support column, one end of the windshield support column is plugged into the plug-in hole, and the other end of the windshield support column is fastened to the flange structure.

[0014] Furthermore, a plurality of conveying grooves are arranged at the bottom of the base, and the notches of the conveying grooves are arranged at the edges of the base.

[0015] By applying the technical solution of the present invention, when multiple capacitor modules are electrically connected through a busbar to form a capacitor assembly, the connectors arranged on the corresponding sides of two adjacent bases can be staggered and matched with each other. Compared with the traditional technical solution, the busbar connection of two capacitor modules needs to cross the distance of two connection structures respectively. The technical solution provided by the present application uses the form of staggered matching to enable the busbar to be connected by only crossing the distance of one connector, thereby reducing the spacing between the two capacitor modules when connected, and then reducing the distance between the busbars of two adjacent capacitor modules, so as to shorten the current path, reduce the impedance of the busbar, reduce the heat of the capacitor assembly, and ensure that after the capacitor modules are connected, no large voltage drop will be generated at both ends of the multiple busbars of the capacitor assembly, thereby ensuring the electrical performance of the capacitor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 The structure diagram of the capacitor assembly provided by the utility model is shown;

[0018] Figure 2The structure diagram of the capacitor module provided by the utility model is shown;

[0019] Figure 3 A bottom view of the capacitor assembly provided by the utility model is shown;

[0020] Figure 4 Shows Figure 1 A partial enlarged view of the middle A;

[0021] Figure 5 The schematic diagram of the structure of the base provided by the utility model is shown.

[0022] The above drawings include the following reference numerals:

[0023] 100, capacitor; 110, connection end; 120, fixed end;

[0024] 200, busbar; 210, connection terminal; 220, busbar support column;

[0025] 300, base; 310, first side; 320, second side; 330, mounting block; 340, mounting hole; 350, mounting slot; 351, first hole section; 352, second hole section; 360, plug-in hole; 370, plug-in slot; 380, transport slot; 400, windshield; 410, flange structure; 420, windshield support column. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] refer to Figures 1 to 3 As shown, an embodiment of the utility model provides a capacitor assembly, which includes a plurality of capacitor modules, which are connected in sequence to form a capacitor assembly, and the capacitor module includes a capacitor 100, a busbar 200, and a base 300. Among them, the capacitor 100 has a connecting end 110 and a fixed end 120 that are relatively arranged, the busbar 200 is arranged at the connecting ends 110 of the plurality of capacitors 100, the plurality of capacitors 100 are electrically connected through the busbar 200, the base 300 is arranged at the fixed ends 120 of the plurality of capacitors 100, the plurality of capacitors 100 are fixed on the base 300, and a connector is arranged on the side of the base 300, and the connectors on the corresponding sides of two adjacent bases 300 are staggered.

[0028] By applying the technical solution of the present invention, when multiple capacitor modules are electrically connected through the busbar 200 to form a capacitor assembly, the connectors arranged on the corresponding sides of two adjacent bases 300 can be staggered and matched with each other. Compared with the traditional technical solution, the busbar connection of the two capacitor modules needs to cross the distance of two connection structures respectively. The technical solution provided by the present application uses the form of staggered matching to enable the busbar 200 to only cross the distance of one connector when connecting, thereby reducing the spacing between the two capacitor modules when connected, and then reducing the distance between the busbars 200 of two adjacent capacitor modules, so as to shorten the current path, reduce the impedance of the busbar 200, reduce the heat generation of the capacitor assembly, and ensure that after the capacitor modules are connected, no large voltage drop will be generated at both ends of the multiple busbars 200 of the capacitor assembly, thereby ensuring the electrical performance of the capacitor assembly.

[0029] In the present application, multiple connectors are provided. When two capacitor modules are connected, multiple connectors on the side of one capacitor module are spaced apart from each other to form a receiving space, and the corresponding connector on the other capacitor module is located in the receiving space. Through the above arrangement, the misaligned matching between the connectors of the two capacitor modules connected to each other can be achieved, so as to reduce the spacing between the two capacitor modules when connected, and reduce the voltage drop of the capacitor assembly.

[0030] In a specific embodiment of the present application, the connecting member includes a mounting block 330, and the capacitor module is connected to the cabinet through the mounting block 330. The capacitor module has a first side 310 and a second side 320 that are relatively arranged. The first side 310 and the second side 320 are provided with mounting blocks 330. The mounting blocks 330 on the first side 310 and the second side 320 can be set to two. In this way, the convenience of installing the capacitor module can be improved while ensuring the connection performance of the capacitor module.

[0031] In another specific embodiment of the present application, only one mounting block 330 may be set on the first side 310, and two mounting blocks 330 may be set on the second side 320, as long as the stability of the connection between the capacitor module and the cabinet can be guaranteed and the multiple mounting blocks 330 set on two adjacent capacitor modules form an interlaced structure.

[0032] refer to Figure 4As shown, a plurality of connection terminals 210 are arranged on the busbar 200. When a plurality of capacitor modules are connected to each other, the plurality of connection terminals 210 of two adjacent busbars 200 are arranged one by one in the vertical direction and overlap each other. Through the above arrangement, the contact area of ​​the busbar 200 when connected can be increased, and the electrical performance of the capacitor assembly can be ensured. At the same time, there is no need to add an additional transition component for connecting the auxiliary busbar 200, and the heat generation of the plurality of busbars 200 at the connection point is reduced, and the electrical performance of the capacitor assembly is further ensured.

[0033] Specifically, the capacitor assembly further includes a busbar support column 220, which is disposed between the base 300 and the busbar 200 and is used to assist in supporting the busbar 200. In the prior art, the busbar is generally a stacked structure, and multiple layers of copper plates are stacked to form the busbar, which will increase the weight of the busbar 200. In the present application, by providing the busbar support column 220, the busbar 200 can be auxiliary supported, and the capacitor 100 can be protected to a certain extent.

[0034] In a specific embodiment of the present application, the busbar support column 220 is made of insulating material. In a high voltage power usage scenario, the potential of the busbar 200 is high. By setting the busbar support column 220 to an insulating material, the number of contacts on the busbar 200 is reduced, the risk of leakage of the capacitor assembly is reduced, and the safety performance of the capacitor assembly during use is ensured.

[0035] In a specific embodiment of the present application, the base 300 is made of an insulating material. In the present application, the capacitor 100 is an electrolytic capacitor, which is electrically connected to the connection end 110 of the busbar 200, but at the same time, the fixed end 120 of the capacitor 100 also has a potential. In order to prevent leakage, etc., the base 300 is made of an insulating material in the present application, which can prevent the capacitor from short-circuiting and ensure the performance and safety of the capacitor 100.

[0036] Specifically, the base 300 is provided with a mounting hole 340, which is arranged corresponding to the fixed end 120, and a mounting groove 350 is arranged on the side of the base 300 away from the capacitor 100, and the mounting groove 350 is communicated with the mounting hole 340, and the mounting groove 350 is used to accommodate a fastener, and the capacitor 100 is fixedly connected to the base 300 through the fastener. Through the above arrangement, the capacitor 100 is fixed with the fastener, which can ensure the connection strength between the capacitor 100 and the base 300, prevent the capacitor 100 from being separated from the base 300, and when a problem occurs with the capacitor 100, the damaged capacitor 100 can be removed and replaced separately, which is convenient for maintenance and low in cost.

[0037] Specifically, the mounting groove 350 has a first hole section 351 and a second hole section 352 that are interconnected. The first hole section 351 is arranged close to the capacitor 100, and the mounting hole 340 is arranged in the first hole section 351. The diameter of the second hole section 352 is larger than the diameter of the first hole section 351. When the fastener is arranged in the mounting groove 350, there is a gap between the inner wall of the second hole section 352 and the outer wall of the fastener. Through the above arrangement, the gap between the inner wall of the second hole section 352 and the outer wall of the fastener can form an avoidance space, which can facilitate the positioning and installation of the fastener, improve the assembly efficiency of the capacitor module, and also facilitate the disassembly, assembly and maintenance of a single capacitor 100.

[0038] In the present application, the capacitor assembly also includes a windshield 400, which extends along the connection direction of the multiple capacitor assemblies, and a heat dissipation channel is formed between the two windshields 400, and the multiple capacitors 100 are located in the heat dissipation channel. Through the above arrangement, the heat dissipation channel formed by the windshield 400 can be used to dissipate heat from the capacitor 100. When the capacitor assembly is arranged inside the cabinet, the heating of each electronic component will cause the temperature inside the cabinet to rise, affecting the electrical performance of the capacitor. The capacitor 100 is cooled by the heat dissipation channel in cooperation with the heat dissipation device of the cabinet, preventing the capacitor 100 from thermal breakdown and ensuring the performance of the capacitor assembly.

[0039] In a specific embodiment of the present application, refer to Figure 5 As shown, the windshield 400 is a rectangular plate, and the windshield 400 has a connecting edge and a free edge that are relatively arranged in the height direction. The base 300 is also provided with a plug-in slot 370, and the plug-in slot 370 extends along the length direction of the base 300. The connecting edge of the rectangular windshield 400 that matches the plug-in slot 370 is plugged into the plug-in slot 370. The rectangular windshield 400 is provided with a flange structure 410 on the free edge that is relatively arranged with the connecting edge. The base 300 is provided with a plug-in hole 360. The capacitor assembly also includes a windshield support column 420, and one end of the windshield support column 420 is plugged into the plug-in slot 370. Connected to the plug-in hole 360, the other end of the windshield support column 420 is fastened to the flange structure 410. Through the above arrangement, the windshield support column 420 can improve the connection strength between the windshield 400 and the base, while also ensuring the structural strength of the windshield 400 and preventing the windshield 400 from being deformed, which affects the heat dissipation effect of the capacitor 100. By setting the plug-in slot 370 and the plug-in hole 360, the windshield support column 420 and the windshield 400 are fixed by plugging, so that the windshield 400 can be quickly installed and disassembled, which facilitates assembly.

[0040] Furthermore, a plurality of transport grooves 380 are provided at the bottom of the base 300, and the notches of the transport grooves 380 are provided at the edge of the base 300. Since the capacitor module is provided with a plurality of capacitors 100, the overall weight of the capacitor module increases. In the process of transporting the capacitor module, the plurality of transport grooves 380 provided at the bottom of the base 300 can facilitate workers to pick up and put down the capacitor module, thereby improving the convenience of manual transport.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0043] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A capacitor component, characterized in that: The capacitor assembly includes a plurality of capacitor modules, and the plurality of capacitor modules are sequentially connected to form the capacitor assembly, and the capacitor module includes: A capacitor (100) having a connecting end (110) and a fixed end (120) arranged opposite to each other; A busbar (200) is arranged at the connection ends (110) of the plurality of capacitors (100), and the plurality of capacitors (100) are electrically connected via the busbar (200); A base (300) is arranged at the fixed ends (120) of the plurality of capacitors (100), the plurality of capacitors (100) are fixed on the base (300), a connecting piece is arranged on the side of the base (300), and the connecting pieces on the corresponding sides of two adjacent bases (300) are arranged in a staggered manner.

2. The capacitor assembly according to claim 1, characterized in that: There are multiple connecting members. When two capacitor modules are connected, the multiple connecting members on the side of one of the capacitor modules are spaced apart from each other, and the space forms a receiving space. The corresponding connecting member on the other capacitor module is located in the receiving space.

3. The capacitor assembly according to claim 1, characterized in that: The busbar (200) is provided with a plurality of connection terminals (210). When a plurality of the capacitor modules are connected to each other, the plurality of connection terminals (210) at the connection points of two adjacent busbars (200) are arranged in one-to-one correspondence and overlap each other.

4. The capacitor assembly according to claim 1, characterized in that: The capacitor assembly further comprises a busbar support column (220), wherein the busbar support column (220) is arranged between the base (300) and the busbar (200) and is used to assist in supporting the busbar (200).

5. The capacitor assembly according to claim 4, characterized in that: The busbar support column (220) is made of insulating material, and / or the base (300) is made of insulating material.

6. The capacitor assembly according to claim 1, characterized in that: The base (300) is provided with a mounting hole (340), the mounting hole (340) being arranged corresponding to the fixed end (120), and a mounting groove (350) being arranged on a side of the base (300) away from the capacitor (100), the mounting groove (350) being connected to the mounting hole (340), the mounting groove (350) being used to accommodate a fastener, and the capacitor (100) is fixedly connected to the base (300) via the fastener.

7. The capacitor assembly according to claim 6, characterized in that: The mounting groove (350) comprises a first hole section (351) and a second hole section (352) which are connected to each other, the first hole section (351) is arranged close to the capacitor (100), the mounting hole (340) is arranged in the first hole section (351), the diameter of the second hole section (352) is larger than the diameter of the first hole section (351), and when the fastener is arranged in the mounting groove (350), there is a gap between the inner wall of the second hole section (352) and the outer wall of the fastener.

8. The capacitor assembly according to claim 1, characterized in that: The capacitor assembly further comprises a windshield (400), wherein the windshield (400) extends along the connection direction of the plurality of capacitor assemblies, a heat dissipation channel is formed between two of the windshields (400), and the plurality of capacitors (100) are located in the heat dissipation channel.

9. The capacitor assembly according to claim 8, characterized in that: The windshield (400) has a connecting edge and a free edge that are arranged opposite to each other. The base (300) is also provided with a plug-in slot (370), the connecting edge of the windshield (400) is plugged into the plug-in slot (370), the free edge is provided with a flange structure (410), the base (300) is provided with a plug-in hole (360), and the capacitor assembly also includes a windshield support column (420), one end of the windshield support column (420) is plugged into the plug-in hole (360), and the other end of the windshield support column (420) is fastened to the flange structure (410).

10. The capacitor assembly according to claim 1, characterized in that: A plurality of transport grooves (380) are arranged at the bottom of the base (300), and the notches of the transport grooves (380) are arranged at the edges of the base (300).

Images