A low inductance pulse capacitor
By adopting the inner string plate structure and convex aluminum foil design in the capacitor, the problem of plate width being limited by the fuel tank is solved, the capacitance and electrical performance are improved, and the internal resistance and internal sense are reduced, achieving more efficient energy use.
Patent Information
- Application Number
- CN202420384209.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The plate width of existing capacitors is limited by the narrowest surface of the fuel tank, which affects the capacitance and electrical performance. At the same time, the internal resistance and internal sense are large, resulting in excessive energy loss during fast charging and discharging.
The inner string plate structure and convex aluminum foil design are adopted to increase the effective area of the electrode plate, and the inner string plate structure allows the electrode plate to be more compact and flexible layout, and improve mechanical strength and electrical connection reliability by strengthening the electrode plate structure.
Improve the capacitor's capacitance and electrical performance without changing the external dimensions of the fuel tank, increase design flexibility, reduce internal resistance and internal sense, and reduce energy loss during fast charging and discharging.
Smart Images
Figure CN222705316U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of capacitors, in particular to a low-inductance pulse capacitor. Background Art
[0002] The oil tank is an important component of the capacitor, which is mainly used to accommodate and protect the internal components of the capacitor. At the same time, in current capacitors, the width of the plate is often limited by the size of the capacitor oil tank. The narrowest side of the oil tank determines the minimum width of the plate, which in turn affects the capacitance and other electrical properties of the capacitor. This means that the position of the lead-out electrode of the capacitor cannot be adjusted at will, because it is directly related to the layout of the plate and the size of the oil tank. At the same time, the internal resistance and internal inductance of the current capacitor are both large, which will cause excessive energy loss in places where fast charging and discharging are required. Utility Model Content
[0003] In view of the defects in the prior art, the utility model provides a low-inductance pulse capacitor.
[0004] A low-inductance pulse capacitor comprises a multilayer film body; wherein an inner series plate structure is arranged between the multilayer film bodies, the inner series plate structure comprises two first hidden pole aluminum foils connected in series with each other, the two first hidden pole aluminum foils are both stacked with a salient pole aluminum foil, and the end of the salient pole aluminum foil extends out of the multilayer film body.
[0005] Preferably, a reinforcing plate structure is also provided between the multilayer film bodies, and the reinforcing plate structure includes two second hidden pole aluminum foils stacked on each other. The reinforcing plate structure, especially the stacked second hidden pole aluminum foil, can significantly increase the mechanical strength and stability of the capacitor. When the capacitor is subjected to a large current charge and discharge test, the reinforcing plate structure can better protect the internal components and reduce the risk of damage; the stacking design of the second hidden pole aluminum foil increases the contact area between the plates, thereby improving the reliability and stability of the electrical connection, which helps to reduce problems such as poor contact or short circuit that may occur during the operation of the capacitor, and ensures that the capacitor can work continuously and stably; the design of the reinforcing plate structure helps to optimize the electric field distribution inside the capacitor, reduce the risk of electric field concentration and local discharge, and the uniform electric field distribution can improve the voltage resistance of the capacitor, so that it can operate safely at a higher operating voltage.
[0006] Preferably, the front end of the salient pole aluminum foil is provided with a first folding edge. The folding edge is a structural form formed after a process, which is used to prevent the burrs or irregular shapes on the edge of the aluminum foil from adversely affecting the performance of the capacitor. Through the first folding edge, the front end of the salient pole aluminum foil can be made smoother and more uniform.
[0007] Preferably, both ends of the second hidden pole aluminum foil are provided with second folded edges. Similarly, the second folded edges can make both ends of the second hidden pole aluminum foil smoother and more uniform.
[0008] The beneficial effects of the utility model are embodied in:
[0009] In the low inductance pulse capacitor of the utility model, by adopting the inner series plate structure and the salient pole aluminum foil design, the capacitor can increase the effective area of the plate without changing the external size of the oil tank. The salient pole aluminum foil extends out of the multilayer film body, so that the width of the plate is no longer completely limited by the narrowest surface of the oil tank, thereby improving the capacitance and other electrical properties of the capacitor; further, the inner series plate structure allows the plates inside the capacitor to be arranged more compactly and flexibly, and is no longer completely restricted by the size of the oil tank. This design allows the position of the lead-out electrode to be adjusted according to actual needs, increasing the flexibility and practicality of the design. This flexibility is particularly important when specific electrical connections or optimized wiring are required; the first hidden pole aluminum foil and the salient pole aluminum foil are stacked, and the double aluminum foil structure effectively reduces the internal resistance of the capacitor by increasing the current conduction path and surface area. At the same time, this structure also helps to reduce the formation of a magnetic field inside the capacitor, thereby reducing the internal inductance. The reduction in internal resistance and internal inductance means that energy loss is reduced during rapid charging and discharging, thereby improving the efficiency and response speed of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0011] Figure 1 It is a structural schematic diagram of the utility model.
[0012] Reference numerals:
[0013] 1-multilayer film body, 2-internal series plate structure, 21-first hidden pole aluminum foil, 22-salient pole aluminum foil, 221-first folded edge, 3-reinforced plate structure, 31-second hidden pole aluminum foil, 311-second folded edge. DETAILED DESCRIPTION
[0014] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0016] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0017] like Figure 1 As shown, a low inductance pulse capacitor includes a multilayer film body 1; wherein an inner series plate structure 2 is arranged between the multilayer film bodies 1, and the inner series plate structure 2 includes two first hidden pole aluminum foils 21 connected in series with each other, and the two first hidden pole aluminum foils 21 are both stacked with salient pole aluminum foils 22, and the end of the salient pole aluminum foil 22 extends out of the multilayer film body 1.
[0018] In this embodiment, it should be noted that by adopting the inner series plate structure 2 and the salient pole aluminum foil 22 design, the capacitor can increase the effective area of the plate without changing the external size of the oil tank. The salient pole aluminum foil 22 extends out of the multilayer film body 1, so that the width of the plate is no longer completely limited by the narrowest surface of the oil tank, thereby improving the capacitance and other electrical properties of the capacitor; further, the inner series plate structure 2 allows the plates inside the capacitor to be arranged more compactly and flexibly, and is no longer completely restricted by the size of the oil tank. This design allows the position of the lead-out electrode to be adjusted according to actual needs, increasing the flexibility and practicality of the design. This flexibility is particularly important when specific electrical connections or optimized wiring are required; the first hidden pole aluminum foil 21 and the salient pole aluminum foil 22 are stacked, and the double aluminum foil structure effectively reduces the internal resistance of the capacitor by increasing the conduction path and surface area of the current. At the same time, this structure also helps to reduce the formation of a magnetic field inside the capacitor, thereby reducing the internal inductance. The reduction in internal resistance and internal inductance means that energy loss is reduced during rapid charging and discharging, thereby improving the efficiency and response speed of the capacitor.
[0019] Specifically, a reinforcing plate structure 3 is further arranged between the multilayer film bodies 1 , and the reinforcing plate structure 3 includes two second hidden-pole aluminum foils 31 stacked on each other.
[0020] In this embodiment, it should be noted that the reinforced plate structure 3, especially the stacked second hidden pole aluminum foil 31, can significantly increase the mechanical strength and stability of the capacitor. When the capacitor is subjected to a large current charge and discharge test, the reinforced plate structure 3 can better protect the internal components and reduce the risk of damage; the stacked design of the second hidden pole aluminum foil 31 increases the contact area between the plates, thereby improving the reliability and stability of the electrical connection, which helps to reduce problems such as poor contact or short circuit that may occur during the operation of the capacitor, and ensures that the capacitor can work continuously and stably; the design of the reinforced plate structure 3 helps to optimize the electric field distribution inside the capacitor, reduce the risk of electric field concentration and local discharge, and the uniform electric field distribution can improve the voltage resistance of the capacitor, so that it can operate safely at a higher operating voltage.
[0021] Specifically, a first folded edge 221 is provided at the front end of the salient pole aluminum foil 22 .
[0022] In this embodiment, it should be noted that the folded edge is a structural form formed after a process, which is used to prevent the burrs or irregular shapes on the edge of the aluminum foil from having an adverse effect on the performance of the capacitor. Through the first folded edge 221, the head end of the salient pole aluminum foil 22 can be made smoother and more uniform.
[0023] Specifically, both ends of the second hidden electrode aluminum foil 31 are provided with second folded edges 311 .
[0024] In this embodiment, it should be noted that, similarly, the second folded edge 311 can make both ends of the second hidden electrode aluminum foil 31 smoother and more uniform.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. A low inductance pulse capacitor, characterized in that: Comprising a multilayer film body; wherein, An inner series plate structure is arranged between the multilayer film bodies, and the inner series plate structure includes two first hidden pole aluminum foils connected in series, and the two first hidden pole aluminum foils are both stacked with salient pole aluminum foils, and the ends of the salient pole aluminum foils extend out of the multilayer film body.
2. The low inductance pulse capacitor according to claim 1, characterized in that: A reinforcing plate structure is also arranged between the multilayer film bodies, and the reinforcing plate structure includes two second hidden pole aluminum foils stacked on each other.
3. The low inductance pulse capacitor according to claim 1, characterized in that: The front end of the salient pole aluminum foil is provided with a first folded edge.
4. The low inductance pulse capacitor according to claim 2, characterized in that: Both ends of the second hidden pole aluminum foil are provided with second folded edges.