Electrode splicing structure for a capacitor

Abstract

The utility model provides a kind of electrode splicing structure of capacitor, comprising: main electrode, switching electrode and splicing piece;The main electrode includes at least two independent electrodes, the outer surface of each independent electrode is connected with switching electrode, to make the electrically conductive between each independent electrode, and the electrode surface of switching electrode is connected with capacitor, the splicing piece is connected with each independent electrode, to make each independent electrode splicing into an integral whole.Electrode splicing structure of capacitor can solve the problem of insufficient lap joint area and bonding strength of capacitor when the design space is limited, guarantee main electrode electrical connection and overall structure reliability.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, specifically to an electrode splicing structure for a capacitor. Background Technology

[0002] In the development of new energy and industrial automation, power supply equipment (such as industrial switching power supplies and vehicle power supplies) and battery systems (such as new energy vehicle power battery packs and energy storage battery systems) are being upgraded towards high power density and compactness. As a core energy storage and filtering component, capacitors are subject to increasingly strict restrictions on their installation space.

[0003] In traditional capacitor design, electrical connections are typically established by overlapping different metal plates to achieve stable current transmission. This overlapping method, in scenarios with ample installation space, ensures sufficient overlap area, thereby meeting the system's requirements for overcurrent capacity and structural strength.

[0004] However, in mainstream applications of power supplies and batteries, the installation space for capacitors is significantly reduced: New energy vehicle power battery packs need to integrate multiple components such as cells, management systems, and cooling modules, drastically reducing the space available for capacitors; industrial switching power supplies need to integrate multiple functional modules such as rectification, filtering, and voltage regulation within a limited housing, often squeezing capacitors into narrow gaps; portable energy storage power supplies, due to their pursuit of lightweight design, have even stricter size restrictions on capacitors. Under these space-constrained design conditions, traditional surface-to-surface overlapping methods cannot guarantee sufficient overlap area, leading to insufficient overcurrent capacity and insufficient bonding strength. While the industry has attempted improvements through thinner metal sheets and optimized electrode edge shapes, these solutions have significant limitations: thinner metal sheets are prone to deformation under conditions such as battery system vibration, leading to a further decrease in structural strength; optimized electrode shapes only slightly increase the overlap area and still cannot meet the high current transmission requirements of the power supply and battery system, making it difficult to simultaneously achieve both electrical performance and structural reliability. Therefore, an innovative capacitor structure design is urgently needed. Utility Model Content

[0005] This invention aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, the purpose of this invention is to propose an electrode splicing structure for a capacitor that can solve the problems of insufficient overlap area and bonding strength when design space is limited, thus ensuring the electrical connection of the main electrodes and the reliability of the overall structure.

[0006] To achieve the above objectives, this utility model proposes an electrode splicing structure for a capacitor, which includes: a main electrode, a transfer electrode, and a splicing component; The main electrode includes at least two independent electrodes. The adapter electrode is connected to the outer surface of each independent electrode to form an electrical connection between the independent electrodes. The splicing component is connected to each independent electrode to splice the independent electrodes into a whole.

[0007] According to the present invention, an electrode splicing structure for a capacitor is proposed. By dividing the main electrode into at least two independent electrodes to adapt to the limited design space, and then connecting the outer surfaces of each independent electrode with an adapter electrode to achieve electrical conduction between the independent electrodes, the independent electrodes are connected by a splicing component to splice the divided independent electrodes into a whole to improve the overall structural bonding strength. This electrode splicing structure of the capacitor can solve the problem of insufficient overlap area and bonding strength when the design space is limited, and ensure the electrical connection of the main electrode and the reliability of the overall structure.

[0008] In addition, the electrode splicing structure of the capacitor proposed in the above embodiments of this utility model may also have the following additional technical features: Optionally, the splicing component is clamped to each of the individual electrodes.

[0009] Optionally, the surfaces of the main electrode, the adapter electrode, and the splicing component are all provided with an anti-oxidation coating.

[0010] Optionally, the adapter electrode is fixed to the main electrode, and the splicing component is fixed to the main electrode by welding or bolting.

[0011] Optionally, the thickness of both the adapter electrode and the splicing component is less than the thickness of the main electrode. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the electrode splicing structure of the capacitor according to an embodiment of the present invention; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 This is an exploded view of the electrode splicing structure of the capacitor according to an embodiment of the present invention; Explanation of reference numerals in the attached figures: Main electrode 1, independent electrode 11, adapter electrode 2, connecting pin 21, splicing component 3. Detailed Implementation

[0013] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0014] To better understand the above technical solutions, 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 drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, 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.

[0015] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0016] The following is for reference. Figures 1-3 The implementation of the electrode splicing structure of the capacitor proposed in the embodiments of this utility model will be described in detail.

[0017] According to an embodiment of the present invention, the electrode splicing structure of the capacitor includes: a main electrode 1, a transfer electrode 2, and a splicing component 3. The main electrode 1 includes at least two independent electrodes 11. The adapter electrode 2 is connected to the outer surface of each independent electrode 11 so that electrical conduction is formed between each independent electrode 11. The splicing component 3 is connected to each independent electrode 11 so that each independent electrode 11 is spliced ​​into a whole.

[0018] In other words, the core design concept of the capacitor's electrode splicing structure is to divide the traditional integrated main electrode 1 into at least two independent electrodes 11, making it easier to adapt to scenarios with limited design space and solving the problem of the integrated main electrode 1 being difficult to install due to size limitations. The adapter electrode 2 and the splicing component 3 respectively undertake the core functions of electrical conduction and structural fixation. The adapter electrode 2 is connected to the outer surface of each independent electrode 11, and the current conduction between each independent electrode 11 is achieved through this connection, ensuring that the electrical path is not interrupted after the electrodes are separated. At the same time, the various shapes of the adapter electrode 2 facilitate matching with various capacitor structures or shell structures to form a buffer. The splicing component 3 is connected to each independent electrode 11, structurally splicing the divided independent electrodes 11 into a whole, avoiding displacement or loosening of the independent electrodes 11 due to their dispersed placement. The independent electrode 11 and the adapter electrode 2 can be made of conductive materials such as copper, aluminum, or copper-aluminum alloy. The splicing component 3 can be made of conductive or non-conductive materials such as copper, aluminum, copper-aluminum alloy, or insulating plastic parts. The splicing component 3 can serve only as a fixation between the independent electrodes 11, or it can serve a dual function of conduction and fixation between the independent electrodes 11. The number of adapter electrodes 2 can be set according to actual application. The adapter electrode 2 can be set at one end of the main electrode 1. The adapter electrode 2 can be connected to the electrode surface of the internal core. The main electrode 1 can be connected to an external power supply or battery to reduce inductance and improve system performance. The adapter electrode 2 can be set at both ends of the main electrode 1. One end of the adapter electrode 2 is connected to the electrode surface of the core, and the other end of the adapter electrode 2 is connected to an external connector. The main electrode 1 serves as an intermediate bridge.

[0019] Therefore, by dividing the main electrode 1 into at least two independent electrodes 11 to adapt to the limited design space, and then connecting the outer surfaces of each independent electrode 11 with the adapter electrode 2 to achieve electrical conduction between each independent electrode 11, and connecting each independent electrode 11 with the splicing component 3, the divided independent electrodes 11 are spliced ​​into a whole to improve the overall structural bonding strength. This allows the electrode splicing structure of the capacitor to solve the problem of insufficient capacitor overlap area and bonding strength when the design space is limited, and ensure the reliability of the electrical connection of the main electrode 1 and the overall structure.

[0020] Optionally, the splicing component 3 and the adapter electrode 2 are clamped together to connect the individual electrodes 11. Understandably, by clamping and fixing the individual electrodes 11 from different sides using the splicing component 3 and the adapter electrode 2, the individual electrodes 11 are stably confined between them. Simultaneously, the adapter electrode 2 can achieve a tight conductive connection with the individual electrodes 11 through the clamping contact. This not only enhances the structural stability of the individual electrodes 11 through the clamping structure, preventing displacement or loosening during use, but also ensures a tighter conductive contact between the adapter electrode 2 and the individual electrodes 11, reducing contact resistance and guaranteeing reliable electrical conductivity, thus achieving a dual optimization of structural fixation and electrical connection.

[0021] Optionally, the surfaces of the main electrode 1, the adapter electrode 2, and the splicing component 3 are all coated with an anti-oxidation coating. Understandably, the anti-oxidation coating forms a protective barrier on the surface of each component, isolating corrosive substances such as air and moisture from contact with the component substrate, preventing the substrate from undergoing an oxidation reaction to form an oxide layer. This avoids the decrease in conductivity caused by the oxide layer, extends the service life of each component, and ensures that the electrical performance and structural integrity of the electrode splicing structure are not affected by oxidation and corrosion during long-term use of the capacitor, thereby improving overall reliability.

[0022] Optionally, the adapter electrode 2 and the main electrode 1, and the splicing component 3 and the main electrode 1 are fixed by welding or bolting. Understandably, welding creates intermolecular bonds at the connection points, achieving a secure, non-removable connection, suitable for long-term fixed applications, and ensuring connection stability. Bolting, on the other hand, uses mechanical tightening force to firmly fix the components, providing detachability and facilitating later maintenance, thus improving flexibility. Both methods can be selected according to actual needs, balancing connection reliability and practicality in different application scenarios. Connection holes, which can be threaded holes, can be provided on the adapter electrode 2, each independent electrode 11, and the splicing component 3.

[0023] Optionally, the thickness of both the adapter electrode 2 and the splicing component 3 is less than the thickness of the main electrode 1. Understandably, as the primary current-carrying component, the main electrode 1's greater thickness ensures a sufficient current-carrying cross-section to meet current transmission requirements; the thinner thickness of the adapter electrode 2 and the splicing component 3 satisfies their functional requirements without occupying excessive space. While ensuring the current-carrying performance of the main electrode 1, reducing the thickness of the adapter electrode 2 and the splicing component 3 reduces the overall space occupied by the electrode splicing structure, making it more suitable for space-constrained design scenarios, while avoiding unnecessary material waste, thus balancing performance, space, and cost requirements.

[0024] In addition, the adapter electrode 2 is also provided with a connecting foot 21, which facilitates welding to the electrode surface of the core. The adapter electrode 2 can be bent according to installation requirements. Since the adapter electrode 2 is thinner than the main electrode 1, it is easier to bend and control the bending accuracy.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electrode splicing structure for a capacitor, characterized in that, include: Main electrode, adapter electrode, and splicing components; The main electrode includes at least two independent electrodes. The adapter electrode is connected to the outer surface of each independent electrode to form an electrical connection between the independent electrodes. The splicing component is connected to each independent electrode to splice the independent electrodes into a whole.

2. The electrode splicing structure of the capacitor as described in claim 1, characterized in that, The splicing component is clamped to each of the independent electrodes.

3. The electrode splicing structure of the capacitor as described in claim 1, characterized in that, The surfaces of the main electrode, the adapter electrode, and the splicing component are all coated with an anti-oxidation coating.

4. The electrode splicing structure of the capacitor as described in claim 1, characterized in that, The adapter electrode is fixed to the main electrode, and the splicing component is fixed to the main electrode by welding or bolting.

5. The electrode splicing structure of the capacitor as described in claim 1, characterized in that, The thickness of both the adapter electrode and the splicing component is less than the thickness of the main electrode.

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