Capacitor busbar structure and capacitor
By designing the capacitor busbar into a "Z-shaped" structure and ensuring the opposite electrical properties, the problem of large stray inductance inside the capacitor is solved, and the performance of electrical devices and the simplification of manufacturing is achieved.
Patent Information
- Application Number
- CN202422225979.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-11
AI Technical Summary
There are large stray inductors inside existing capacitors, which affect the performance of electrical devices.
The "Z-shaped" structure of the first capacitor busbar and the second capacitor busbar is adopted to ensure that the two are electrically opposite, and the connection of the core is achieved by the card interface and notch design. The current flowing through the core is opposite in the direction, thereby generating an opposite magnetic field to reduce stray inductance.
Effectively reduce stray inductance inside the capacitor, improve the performance and production efficiency of electrical devices, while simplifying the manufacturing difficulty and improving space utilization.
Smart Images
Figure CN223155820U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of capacitors, and particularly to a capacitor busbar structure and a capacitor. Background Art
[0002] Capacitors are important components in electronic products. However, the connection between electrical components and capacitors will generate stray inductance, which affects the performance of electrical components.
[0003] In related technologies, a capacitor includes a first capacitor busbar and a second capacitor busbar with opposite electricities, as well as a core and terminals connected between the first capacitor busbar and the second capacitor busbar. Among them, the terminals are further connected to electrical components. Since the terminals adopt a first terminal and a second terminal with opposite electricities, which are respectively connected to the first capacitor busbar and the second capacitor busbar, opposite currents will be generated at the positions where the current passes through the first terminal and the second terminal, generating opposite magnetic fields, and the reduction of stray inductance can be achieved.
[0004] However, since the currents in the capacitor are only opposite at the terminals, the stray inductance generated by the core far from the terminals cannot be reduced, resulting in a relatively large stray inductance inside the capacitor. Summary of the Utility Model
[0005] Based on this, it is necessary to provide a capacitor busbar structure and a capacitor, aiming to solve the problem that the relatively large stray inductance inside the capacitor affects the performance of electrical components.
[0006] A capacitor busbar structure includes:
[0007] A first capacitor busbar, including a first bending portion, a first busbar body, and a second bending portion connected in sequence; the first busbar body has a first surface and a second surface arranged oppositely, the first bending portion is located on one side of the first surface, and the second bending portion is located on one side of the second surface;
[0008] A second capacitor busbar, including a third bending portion, a second busbar body, and a fourth bending portion connected in sequence; the second busbar body has a third surface and a fourth surface arranged oppositely, the third bending portion is located on one side of the third surface, and the fourth bending portion is located on one side of the fourth surface; the fourth surface faces the first surface;
[0009] Wherein, at least one of the first busbar body and the first bending portion is provided with a card interface, the fourth bending portion is used to be inserted into the card interface, the first bending portion, the second busbar body, and the third bending portion enclose to form a first capacitor core position, the second bending portion, the first busbar body, and the fourth bending portion enclose to form a second capacitor core position, the first capacitor core position is used to accommodate a first core, and the second capacitor core position is used to accommodate a second core;
[0010] The first capacitor busbar has a first electrical property, and the second capacitor busbar has a second electrical property; the first electrical property and the second electrical property are opposite in electrical nature.
[0011] In one embodiment, the card interface includes:
[0012] A first notch, provided on the first busbar body and penetrating through the first surface and the second surface, and the fourth bending portion penetrates through the first notch.
[0013] In one embodiment, the card interface includes:
[0014] A second notch, provided on the first bending portion, and the second busbar body penetrates through the second notch;
[0015] Wherein, the second notch extends from one end of the first bending portion towards the other end of the first bending portion, and the extending direction is parallel to the extending direction of the first capacitor busbar.
[0016] In one embodiment, the second busbar body is provided with a third notch, and the first bending portion penetrates through the third notch;
[0017] Wherein, the third notch extends from one end of the second busbar body towards the other end of the second busbar body, and the extending direction is parallel to the extending direction of the second capacitor busbar; the extending direction of the second capacitor busbar is parallel to the extending direction of the first capacitor busbar.
[0018] In one embodiment, the first bending portion is provided with a fourth notch, the fourth bending portion is provided with a fifth notch, the fourth notch penetrates through the surface of the first bending portion, the fifth notch penetrates through the surface of the fourth bending portion, the first bending portion penetrates through the fifth notch, and the fourth bending portion penetrates through the fourth notch.
[0019] In one embodiment, there is a gap between the first capacitor busbar and the second capacitor busbar.
[0020] In one embodiment, the first capacitor busbar is of an integrally formed structure, and / or
[0021] The second capacitor busbar is of an integrally formed structure.
[0022] In one embodiment, the first bending portion is provided with a first connection end, the second bending portion is provided with a second connection end, the third bending portion is provided with a third connection end, and the fourth bending portion is provided with a fourth connection end;
[0023] The first connection end is used to connect the first electrode of the first core, and the third connection end is used to connect the second electrode of the first core; the second connection end is used to connect the first electrode of the second core, and the fourth connection end is used to connect the second electrode of the second core;
[0024] Wherein, the first electrode and the second electrode are opposite in electrical nature.
[0025] In one embodiment, the first connection end, the second connection end, the third connection end, and the fourth connection end are all multiple, and the multiple first connection ends and the multiple second connection ends are both arranged at intervals along the extending direction of the first capacitor busbar, and the multiple third connection ends and the multiple fourth connection ends are both arranged at intervals along the extending direction of the second capacitor busbar;
[0026] Wherein, the extending direction of the second capacitor busbar is parallel to the extending direction of the first capacitor busbar.
[0027] A capacitor includes a core and a capacitor busbar structure, and the core is connected to the capacitor busbar structure.
[0028] The above capacitor busbar structure and capacitor, the capacitor busbar structure includes a first capacitor busbar and a second capacitor busbar. The first capacitor busbar includes a first bending portion, a first busbar body, and a second bending portion that are connected in sequence; the first busbar body has a first surface and a second surface that are oppositely arranged, the first bending portion is located on one side of the first surface, and the second bending portion is located on one side of the second surface. The second capacitor busbar includes a third bending portion, a second busbar body, and a fourth bending portion that are connected in sequence; the second busbar body has a third surface and a fourth surface that are oppositely arranged, the third bending portion is located on one side of the third surface, and the fourth bending portion is located on one side of the fourth surface; the fourth surface faces the first surface. Wherein, at least one of the first busbar body and the first bending portion is provided with a card interface, the fourth bending portion is used to be inserted into the card interface, the first bending portion, the second busbar body, and the third bending portion enclose to form a first capacitor core position, the second bending portion, the first busbar body, and the fourth bending portion enclose to form a second capacitor core position, the first capacitor core position is used to accommodate a first core, and the second capacitor core position is used to accommodate a second core. The first capacitor busbar has a first electric property, and the second capacitor busbar has a second electric property; the first electric property and the second electric property are opposite in electric property.
[0029] For the capacitor busbar structure of the present application, since the electric property of the first capacitor busbar and the electric property of the second capacitor busbar are opposite, when the first core is accommodated in the first capacitor core position and the second core is accommodated in the second capacitor core position, the first core and the second core are respectively connected to different positions of the first capacitor busbar and the second capacitor busbar, and the current directions flowing through the first core and the second core are opposite, so that magnetic fields in opposite directions can be generated, the stray inductance inside the capacitor can be reduced, and the use performance of the electrical component can be improved. Description of the Drawings
[0030] Figure 1 It is a schematic structural diagram of the capacitor busbar structure in an embodiment of the present application.
[0031] Figure 2 is Figure 1 an exploded view of the capacitor busbar structure in
[0032] Figure 3 Schematic diagram of the structure of the second capacitor busbar in an embodiment of the present application.
[0033] Figure 4 Another schematic diagram of the structure of the capacitor busbar in an embodiment of the present application.
[0034] Figure 5 It is Figure 4 Schematic diagram of the structure of the capacitor busbar from another perspective in
[0035] Figure 6 It is Figure 4 Exploded view of the structure of the capacitor busbar in
[0036] Figure 7 Another schematic diagram of the structure of the second capacitor busbar in an embodiment of the present application.
[0037] Figure 8 Schematic diagram of the structure of the capacitor in an embodiment of the present application.
[0038] Figure 9 Another schematic diagram of the structure of the capacitor in an embodiment of the present application.
[0039] Figure 10 It is Figure 9 Schematic diagram of the structure of the capacitor from another perspective in
[0040] Explanation of reference numerals:
[0041] 1. Capacitor busbar structure; 2. Capacitor;
[0042] 11. First capacitor busbar; 12. Second capacitor busbar;
[0043] 111. First bending part; 112. First busbar body; 113. Second bending part; 114. Card interface;
[0044] 121. Third bending part; 122. Second busbar body; 123. Fourth bending part;
[0045] 1111. Fourth notch; 1112. First connection end;
[0046] 1131. Second connection end;
[0047] 1141. Second notch;
[0048] 1211. Third connection end;
[0049] 1221. Third notch;
[0050] 1231. Fifth notch; 1232. Fourth connection end;
[0051] 21. Core;
[0052] 211. First core; 212. Second core. Detailed implementation manner
[0053] To make the above objects, features, and advantages of the present application more apparent and understandable, the following will describe the detailed implementation manner of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0054] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.
[0055] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plural", the meaning of "plural" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0056] In the present application, unless otherwise clearly specified and limited, if there are terms such as "installation", "connection", "connection", "fixation", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0057] In this application, unless otherwise clearly defined and limited, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.
[0058] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.
[0059] It should be noted that capacitors are an important part of electronic products. However, the connection between electrical components and capacitors will generate stray inductance, which affects the performance of electrical components.
[0060] Specifically, after the electrical component is electrically connected to the capacitor, stray inductance will be generated inside the capacitor. Among them, stray inductance refers to the unwanted inductance generated in the circuit due to electromagnetic induction, which will cause interference and energy loss during signal transmission. Usually, designers will try their best to reduce the influence of stray inductance. Stray inductance mainly comes from conductors in the circuit, such as the equivalent inductance presented by connecting wires, component leads, component bodies, etc.
[0061] Furthermore, stray inductance will affect the electrical performance of electrical components. When the stray inductance is larger, the switching speed of the electrical component is longer, which increases the loss of the electrical component. Moreover, the larger the stray inductance, the larger the voltage spike when the electrical component switches, and the more likely it is to damage the module. That is, the smaller the stray inductance, the more obvious the improvement of the performance of electrical components.
[0062] Exemplarily, this application uses a power module as the electrical component for illustration. The power module and the capacitor are connected through the module busbar and the capacitor busbar to realize the connection between the power module and the capacitor. Of course, the electrical component can also be other electronic products or electrical modules, and the specific type of the electrical component is not limited here.
[0063] Refer to Figure 1 、 Figure 2 and Figure 3As shown in the figure. The capacitor busbar structure 1 provided by an embodiment of the present application includes a first capacitor busbar 11 and a second capacitor busbar 12. The first capacitor busbar 11 includes a first bending portion 111, a first busbar body 112, and a second bending portion 113 that are connected in sequence; the first busbar body 112 has a first surface and a second surface that are oppositely arranged, the first bending portion 111 is located on one side of the first surface, and the second bending portion 113 is located on one side of the second surface. The second capacitor busbar 12 includes a third bending portion 121, a second busbar body 122, and a fourth bending portion 123 that are connected in sequence; the second busbar body 122 has a third surface and a fourth surface that are oppositely arranged, the third bending portion 121 is located on one side of the third surface, and the fourth bending portion 123 is located on one side of the fourth surface; the fourth surface faces the first surface. Wherein, at least one of the first busbar body 112 and the first bending portion 111 is provided with a card interface 114, the fourth bending portion 123 is used to be inserted into the card interface 114, the first bending portion 111, the second busbar body 122, and the third bending portion 121 enclose to form a first capacitor core position, the second bending portion 113, the first busbar body 112, and the fourth bending portion 123 enclose to form a second capacitor core position, the first capacitor core position is used to accommodate the first core 211, and the second capacitor core position is used to accommodate the second core 212. The first capacitor busbar 11 has a first electrical property, and the second capacitor busbar 12 has a second electrical property; the first electrical property and the second electrical property are opposite in electrical property.
[0064] Specifically, the first busbar body 112 has a first surface and a second surface that are oppositely arranged, the first bending portion 111 is located on one side of the first surface, and the second bending portion 113 is located on one side of the second surface, that is, the first capacitor busbar 11 is formed into a "Z-shaped" structure. Similarly, the second busbar body 122 has a third surface and a fourth surface that are oppositely arranged, the third bending portion 121 is located on one side of the third surface, and the fourth bending portion 123 is located on one side of the fourth surface; the fourth surface faces the first surface, that is, the second capacitor busbar 12 is also formed into a "Z-shaped" structure. For the convenience of description, the present application is exemplarily described with a "Z-shaped" structure.
[0065] Further, the first bending portion 111, the second busbar body 122, and the third bending portion 121 enclose to form a first capacitor core position, and the second bending portion 113, the first busbar body 112, and the fourth bending portion 123 enclose to form a second capacitor core position. The first capacitor core position is used to accommodate the first core 211, and the second capacitor core position is used to accommodate the second core 212. At this time, one end of the first core 211 is connected to the first bending portion 111, and the other end is connected to the third bending portion 121. One end of the second core 212, which is connected to the same side of the first bending portion 111 as the first core 211, is connected to the fourth bending portion 123, and the other end is connected to the second bending portion 113. Since the electric property of the first capacitor busbar 11 is opposite to that of the second capacitor busbar 12, that is, the direction of the current flowing through the first core 211 is opposite to the direction of the current flowing through the second core 212, opposite magnetic fields are generated at the first core 211 and the second core 212, so that the stray inductance at the first core 211 and the second core 212 can be reduced, and further the stray inductance inside the capacitor 2 can be reduced, and the performance of the electrical device can be improved.
[0066] In addition, since the shapes of the first capacitor busbar 11 and the second capacitor busbar 12 are "Z-shaped" structures, the first capacitor busbar 11 and the second capacitor busbar 12 can be interpenetrated with each other, that is, the first core 211 and the second core 212 can be stacked and arranged in the corresponding first capacitor core position and second capacitor core position, which is convenient for the assembler to assemble and operate. At the same time, along the extending direction of the first capacitor busbar 11, a plurality of first cores 211 and a plurality of second cores 212 can be arranged, so that the performance of the capacitor 2 can be improved.
[0067] In addition, since both the first capacitor busbar 11 and the second capacitor busbar 12 are set as "Z-shaped" structures, in the process of manufacturing the first capacitor busbar 11 and the second capacitor busbar 12, the same technology or the same mold can be used for manufacturing, which can reduce the production difficulty and improve the production efficiency.
[0068] In one embodiment, the card interface 114 includes a first notch (not shown in the figure). The first notch is provided on the first busbar body 112 and penetrates the first surface and the second surface, and the fourth bending portion 123 penetrates through the first notch.
[0069] Thus, the fourth bending portion 123 can be directly inserted into the first notch of the first busbar body 112, so as to realize the interpenetration of the first capacitor busbar 11 and the second capacitor busbar 12. On the one hand, only the first notch needs to be provided on the first busbar body 112, which can simplify the structure of the first capacitor busbar 11 and reduce the manufacturing difficulty of the first capacitor busbar 11. On the other hand, the direction in which the second capacitor busbar 12 penetrates the first capacitor busbar 11 is the same as the gravity direction of the second capacitor busbar 12, so that the structure 1 of the capacitor busbar after interpenetration can be ensured to be more stable and reliable.
[0070] In one embodiment, referring to Figure 1 and Figure 2 as shown, the card interface 114 includes a second notch 1141. The second notch 1141 is provided on the first bending portion 111, and the second busbar body 122 is inserted into the second notch 1141. Wherein, the second notch 1141 extends from one end of the first bending portion 111 towards the other end of the first bending portion 111, and the extending direction is parallel to the extending direction of the first capacitor busbar 11.
[0071] Thus, similarly, since only the second notch 1141 needs to be provided on the first bending portion 111, and the second notch 1141 extends from one end of the first bending portion 111 towards the other end of the first bending portion 111, during the process of manufacturing the first capacitor busbar 11, only the corresponding slotting of the first bending portion 111 needs to be performed, which can simplify the manufacturing difficulty of the first capacitor busbar 11. In addition, according to the specific position where the second notch 1141 is opened, the distance between the first busbar body 112 and the second busbar body 122 can be controlled, so as to further reduce the stray inductance between the first core 211 and the second core 212, and thus further improve the use performance of the electrical device.
[0072] In one embodiment, referring to Figure 2 and Figure 3 as shown, the second busbar body 122 is provided with a third notch 1221, and the first bending portion 111 is inserted into the third notch 1221. Wherein, the third notch 1221 extends from one end of the second busbar body 122 towards the other end of the second busbar body 122, and the extending direction is parallel to the extending direction of the second capacitor busbar 12; the extending direction of the second capacitor busbar 12 is parallel to the extending direction of the first capacitor busbar 11.
[0073] Thus, when the first capacitor busbar 11 and the second capacitor busbar 12 need to be clamped, since the second notch 1141 and the third notch 1221 are respectively arranged on the opposite sides of the first capacitor busbar 11 and the second capacitor busbar 12, the first capacitor busbar 11 and the second capacitor busbar 12 only need to be provided with notches with a length of half of their own extension direction, that is, the first capacitor busbar 11 and the second capacitor busbar 12 can be inserted and clamped, so that the space waste after the first capacitor busbar 11 and the second capacitor busbar 12 are inserted can be reduced, so that the space utilization rate of the first core 211 and the second core 212 can be improved, and further the service performance of the capacitor busbar structure 1 can be improved.
[0074] Optionally, the second notch 1141 is arranged at the connection between the first bending part 111 and the first busbar body 112, and the third notch 1221 is arranged at the connection between the fourth bending part 123 and the second busbar body 122. In this way, the first capacitor busbar 11 and the second capacitor busbar 12 can be more compact after being inserted, so that the space utilization rate of the capacitor busbar structure 1 can be improved.
[0075] In one embodiment, referring to Figure 4 , Figure 5 , Figure 6 and Figure 7 as shown, the first bending part 111 is provided with a fourth notch 1111, the fourth bending part 123 is provided with a fifth notch 1231, the fourth notch 1111 penetrates the surface of the first bending part 111, the fifth notch 1231 penetrates the surface of the fourth bending part 123, the first bending part 111 penetrates through the fifth notch 1231, and the fourth bending part 123 penetrates through the fourth notch 1111.
[0076] Thus, in the process of inserting and clamping the first capacitor busbar 11 and the second capacitor busbar 12, only the first bending part 111 needs to be inserted through the fifth notch 1231, and the fourth bending part 123 needs to be inserted through the fourth notch 1111, which can facilitate the insertion process of the first capacitor busbar 11 and the second capacitor busbar 12 and facilitate the installation of the capacitor busbar structure 1.
[0077] It should be noted that the first bending part 111 penetrates through the fifth notch 1231, the fourth bending part 123 penetrates through the fourth notch 1111, one end of the first core 211 is connected to the first bending part 111, and one end of the second core 212 is connected to the fourth bending part 123. Since the first capacitor busbar 11 and the second capacitor busbar 12 are respectively interspersed with the fifth notch 1231 and the fourth notch 1111 through the first bending part 111 and the fourth bending part 123, the first core 211 and the second are along the extension direction of the capacitor busbar structure 1, and the first core 211 and the second core 212 are arranged in a staggered manner.
[0078] In one embodiment, a gap is provided between the first capacitor bus bar 11 and the second capacitor bus bar 12.
[0079] In this way, short circuits between the first core 211, the second core 212, the first capacitor bus bar 11 and the second capacitor bus bar 12 can be avoided, damage to the capacitor 2 can be prevented, and the service life of the capacitor 2 can be extended.
[0080] Optionally, the gap between the first capacitor bus bar 11 and the second capacitor bus bar 12 is filled with an insulating member.
[0081] In this way, the first capacitor bus bar 11 and the second capacitor bus bar 12 can be insulated by the insulating member, further avoiding short circuits between the first core 211, the second core 212, the first capacitor bus bar 11 and the second capacitor bus bar 12, preventing damage to the capacitor 2, and extending the service life of the capacitor 2.
[0082] In one embodiment, the first capacitor bus bar 11 is of an integrally formed structure, and / or the second capacitor bus bar 12 is of an integrally formed structure.
[0083] In this way, since the first capacitor bus bar 11 is of an integrally formed structure, on the one hand, the manufacturing of the first capacitor bus bar 11 can be facilitated, and the production efficiency of the first capacitor bus bar 11 can be improved. On the other hand, the overall stability of the first capacitor bus bar 11 can be ensured, thereby improving the reliability of the operation of the first capacitor bus bar 11. Similarly, since the second capacitor bus bar 12 is of an integrally formed structure, on the one hand, the manufacturing of the second capacitor bus bar 12 can be facilitated, and the production efficiency of the second capacitor bus bar 12 can be improved. On the other hand, the overall stability of the second capacitor bus bar 12 can be ensured, thereby improving the reliability of the operation of the second capacitor bus bar 12.
[0084] In one embodiment, referring to Figure 2 and Figure 6 as shown, the first bending portion 111 is provided with a first connection end 1112, the second bending portion 113 is provided with a second connection end 1131, the third bending portion 121 is provided with a third connection end 1211, and the fourth bending portion 123 is provided with a fourth connection end 1232; the first connection end 1112 is used to connect the first electrode of the first core 211, and the third connection end 1211 is used to connect the second electrode of the first core 211; the second connection end 1131 is used to connect the first electrode of the second core 212, and the fourth connection end 1232 is used to connect the second electrode of the second core 212; wherein, the first electrode and the second electrode have opposite electric polarities.
[0085] In this way, the two ends of the first core 211 can be respectively connected to the first connection end 1112 and the third connection end 1211, so as to realize the normal use of the first core 211. At the same time, the two ends of the second core 212 can be respectively connected to the second connection end 1131 and the fourth connection end 1232, so as to realize the normal use of the second core 212. Further, since the electric polarities of the first electrode and the second electrode of the first core 211 are opposite, the direction of the current flowing through the first core 211 is opposite to the direction of the current flowing through the second core 212, thereby generating opposite magnetic fields at the first core 211 and the second core 212. Thus, the stray inductance at the first core 211 and the second core 212 can be reduced, and further the stray inductance inside the capacitor 2 can be reduced, improving the performance of the electrical device.
[0086] Optionally, one end of the first core 211 is welded to the first connection end 1112, and the other end is welded to the third connection end 1211. One end of the second core 212 is welded to the fourth connection end 1232, and the other end is welded to the second connection end 1131, thereby improving the connection tightness of the first core 211, the second core 212 and the capacitor busbar structure 1.
[0087] In one embodiment, the first connection end 1112, the second connection end 1131, the third connection end 1211 and the fourth connection end 1232 are all multiple. The multiple first connection ends 1112 and the multiple second connection ends 1131 are both arranged at intervals along the extension direction of the first capacitor busbar 11. The multiple third connection ends 1211 and the multiple fourth connection ends 1232 are both arranged at intervals along the extension direction of the second capacitor busbar 12. Wherein, the extension direction of the second capacitor busbar 12 is parallel to the extension direction of the first capacitor busbar 11.
[0088] In this way, along the extension direction of the capacitor busbar structure 1, multiple first cores 211 can be arranged at the first capacitor core position, and multiple second cores 212 can be arranged at the second capacitor core position, thereby increasing the number of the first cores 211 and the second cores 212, improving the capacitance of the capacitor 2, and thus improving the performance of the capacitor 2.
[0089] A capacitor 2 provided in an embodiment of the present application, referring to Figure 8 、 Figure 9 and Figure 10 As shown, the capacitor 2 includes a core 21 and a capacitor busbar structure 1, and the core 21 is connected to the capacitor busbar structure 1.
[0090] For the capacitor 2 of the present application, since the electrical properties of the first capacitor busbar 11 are opposite to those of the second capacitor busbar 12, when the first core 211 is accommodated in the first capacitor core position and the second core 212 is accommodated in the second capacitor core position, the first core 211 and the second core 212 are respectively connected to different positions of the first capacitor busbar 11 and the second capacitor busbar 12, and the current directions flowing through the first core 211 and the second core 212 are opposite, so that magnetic fields with opposite directions can be generated, the stray inductance inside the capacitor 2 can be reduced, and the performance of the electrical device can be improved.
[0091] Optionally, the capacitor 2 further includes capacitor terminals, which include a first capacitor terminal and a second capacitor terminal. Both the first capacitor terminal and the second capacitor terminal are connected to the terminals of an external electrical device. At the same time, the other end of the first capacitor terminal is connected to the first capacitor busbar 11, and the other end of the second capacitor terminal is connected to the second capacitor busbar 12, so as to realize the electrical connection between the capacitor 2 and the electrical device. In addition, since the electrical properties of the first capacitor terminal and the second capacitor terminal are opposite, the capacitor busbar structure 1 near the first capacitor terminal and the second capacitor terminal can generate a reverse magnetic field through the reverse current generated by the first capacitor terminal and the second capacitor terminal, so that the stray inductance at this place can be reduced, and the performance of the electrical device can be improved.
[0092] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0093] The above embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. A capacitor busbar structure, characterized in that, Comprising: A first capacitor busbar, including a first bent portion, a first busbar body, and a second bent portion connected in sequence; the first busbar body has a first surface and a second surface disposed opposite to each other, the first bent portion is located on one side of the first surface, and the second bent portion is located on one side of the second surface; A second capacitor busbar, including a third bent portion, a second busbar body, and a fourth bent portion connected in sequence; the second busbar body has a third surface and a fourth surface disposed opposite to each other, the third bent portion is located on one side of the third surface, and the fourth bent portion is located on one side of the fourth surface; the fourth surface faces the first surface; Wherein, at least one of the first busbar body and the first bent portion is provided with a card interface, the fourth bent portion is for inserting into the card interface, the first bent portion, the second busbar body, and the third bent portion enclose a first capacitor core position, the second bent portion, the first busbar body, and the fourth bent portion enclose a second capacitor core position, the first capacitor core position is for accommodating a first core, and the second capacitor core position is for accommodating a second core; The first capacitor busbar has a first electric property, and the second capacitor busbar has a second electric property; the first electric property and the second electric property are opposite in electric property.
2. The capacitor busbar structure according to claim 1, characterized in that, The card interface includes: A first notch, provided on the first busbar body and penetrating through the first surface and the second surface, and the fourth bent portion passes through the first notch.
3. The capacitor busbar structure according to claim 1, characterized in that, The card interface includes: A second notch, provided on the first bent portion, and the second busbar body passes through the second notch; Wherein, the second notch extends from one end of the first bent portion towards the other end of the first bent portion, and the extending direction is parallel to the extending direction of the first capacitor busbar.
4. The capacitor busbar structure according to claim 3, wherein, The second busbar body is provided with a third notch, and the first bent portion passes through the third notch; Wherein, the third notch extends from one end of the second busbar body towards the other end of the second busbar body, and the extending direction is parallel to the extending direction of the second capacitor busbar; the extending direction of the second capacitor busbar is parallel to the extending direction of the first capacitor busbar.
5. The capacitor busbar structure according to claim 1, characterized in that, The first bent portion is provided with a fourth notch, the fourth bent portion is provided with a fifth notch, the fourth notch penetrates through the surface of the first bent portion, the fifth notch penetrates through the surface of the fourth bent portion, the first bent portion passes through the fifth notch, and the fourth bent portion passes through the fourth notch.
6. The capacitor busbar structure according to any one of claims 1-5, characterized in that, A gap is provided between the first capacitor busbar and the second capacitor busbar.
7. The capacitor busbar structure according to any one of claims 1-5, characterized in that The first capacitor busbar is of an integrally formed structure, and / or The second capacitor busbar is of an integrally formed structure.
8. The capacitor busbar structure according to any one of claims 1-5, characterized in that, The first bent portion is provided with a first connection end, the second bent portion is provided with a second connection end, the third bent portion is provided with a third connection end, and the fourth bent portion is provided with a fourth connection end; The first connection end is used for connecting the first electrode of the first core, and the third connection end is used for connecting the second electrode of the first core; the second connection end is used for connecting the first electrode of the second core, and the fourth connection end is used for connecting the second electrode of the second core; Wherein, the electric properties of the first electrode and the second electrode are opposite.
9. The capacitor busbar structure according to claim 8, characterized in that, The first connection end, the second connection end, the third connection end, and the fourth connection end are all multiple, and the multiple first connection ends and the multiple second connection ends are both arranged at intervals along the extension direction of the first capacitor busbar, and the multiple third connection ends and the multiple fourth connection ends are both arranged at intervals along the extension direction of the second capacitor busbar; Wherein, the extension direction of the second capacitor busbar is parallel to the extension direction of the first capacitor busbar.
10. A capacitor, characterized in that, It includes a core and the capacitor busbar structure according to any one of claims 1-9, and the core is connected to the capacitor busbar structure.