Square aluminum electrolytic capacitor
By introducing anode and cathode connecting posts into square aluminum electrolytic capacitors, direct splicing and parallel connection between capacitors are realized, solving the connection complexity problem of multiple capacitors connected in parallel in the prior art and improving installation efficiency.
Patent Information
- Application Number
- CN202323593413.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-28
AI Technical Summary
When increasing the capacitance of existing square aluminum electrolytic capacitors, multiple capacitors need to be connected in parallel, which leads to additional wiring and connection work, and there is a lack of convenient splicing methods.
A square aluminum electrolytic capacitor was designed, comprising a core, a square outer shell, and a cover plate. The anode and cathode conductive foil strips are electrically connected to the external post through connecting posts, allowing direct plug-in splicing of capacitors and simplifying the connection process.
It enables convenient splicing and parallel connection between square aluminum electrolytic capacitors, reducing additional connection work and improving installation efficiency.
Smart Images
Figure CN222319988U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an aluminum electrolytic capacitor, in particular to a splicable square aluminum electrolytic capacitor Background Art
[0002] At present, square aluminum electrolytic capacitors have begun to appear on the market, such as patent CN115148503A, which discloses core packages, aluminum electrolytic capacitors and packaging methods thereof. The emergence of square aluminum electrolytic capacitors can save installation space on circuit boards, but the current production of aluminum electrolytic capacitors has a fixed rated capacity. When the capacity needs to be increased, multiple capacitors need to be connected in parallel. However, the current parallel connection of aluminum electrolytic capacitors is to connect the anodes and cathodes of two aluminum electrolytic capacitors together with wires, which requires additional wires and connection workload. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a square aluminum electrolytic capacitor that can be spliced.
[0004] In order to solve the above technical problems, the technical solution proposed by the utility model is: a square aluminum electrolytic capacitor, comprising a core package, a square shell and a cover plate, wherein the core package is sealed in a packaging bag made of an aluminum-plastic film, and the core package and the packaging bag are arranged in the square shell together through the cover plate; the anode foil and the cathode foil on the core package are electrically connected with an anode foil strip and a cathode foil strip respectively, and the anode foil strip and the cathode foil strip extend out of the packaging bag, and the cover plate is provided with an anode connecting column and a cathode connecting column, and the anode foil strip and the cathode foil strip are electrically connected to the anode connecting column and the cathode connecting column respectively, and the anode connecting column and the cover plate are electrically insulated.
[0005] In the above-mentioned square aluminum electrolytic capacitor, preferably, the cover plate is welded on the square shell, and an anode external connection column and a cathode external connection column matching the anode connection column and the cathode connection column are provided on the side of the square shell opposite to the cover plate, and the anode external connection column is electrically insulated from the square shell.
[0006] In the above square aluminum electrolytic capacitor, preferably, the anode external connection column and the cathode external connection column are electrically connected to the anode connection column and the cathode connection column respectively.
[0007] In the above-mentioned square aluminum electrolytic capacitor, preferably, the core package comprises an anode foil, an electrolytic paper and a cathode foil; the anode foil, the electrolytic paper and the cathode foil are stacked to form the core package.
[0008] The above-mentioned square aluminum electrolytic capacitor is preferably provided with an anode tab and a cathode tab on the anode foil and the cathode foil respectively; the anode tabs of the anode foil in the core package are stacked together, and the anode foil strip and the anode tab are electrically connected; the cathode tabs of the cathode foil in the core package are stacked together, and the cathode foil strip and the cathode tab are electrically connected.
[0009] In the above square aluminum electrolytic capacitor, preferably, the anode tab and the cathode tab are integrally formed with the anode foil and the cathode foil respectively.
[0010] In the above square aluminum electrolytic capacitor, preferably, the anode tab and the cathode tab are respectively welded to the anode foil and the cathode foil by laser welding.
[0011] Compared with the prior art, the utility model has the advantages that: the square aluminum electrolytic capacitor of the utility model is provided with an anode connection column and a cathode connection column on the cover plate, and the anode connection column and the cathode connection column can be respectively plugged into the anode external connection column and the cathode external connection column, thereby completing the splicing between the aluminum electrolytic capacitors. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the assembly structure of the square aluminum electrolytic capacitor in Example 1.
[0013] Figure 2 This is a schematic diagram of the structure of the anode external column and the cathode external column in Example 1.
[0014] Figure 3 This is a schematic diagram of the assembly structure of the square aluminum electrolytic capacitor in Example 2.
[0015] Figure 4 Schematic diagram of the structure of the anode external column and the cathode external column in Example 2.
[0016] Legend
[0017] 1. Square shell; 2. Cover plate; 3. Packaging bag; 4. Anode foil strip; 5. Cathode foil strip; 6. Anode connecting post; 7. Cathode connecting post; 8. Anode external post; 9. Cathode external post; 10. Rubber sleeve; 11. Insulating tape. DETAILED DESCRIPTION
[0018] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and carefully below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.
[0019] It should be noted that when an element is described as being "fixed, fixed, connected or connected to" another element, it can be directly fixed, fixed, connected or connected to the other element, or it can be indirectly fixed, fixed, connected or connected to the other element through other intermediate connectors.
[0020] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present utility model. Example
[0021] like Figure 1 and Figure 2 A square aluminum electrolytic capacitor shown includes a core pack, a square shell 1 and a cover plate 2, wherein the core pack is sealed in a packaging bag 3, and the core pack and the packaging bag 3 are arranged in the square shell 1 through the cover plate 2. In this embodiment, the aluminum plastic film used to make the packaging bag 3 is insulated. The anode foil strip 4 and the cathode foil strip 5 are electrically connected to the anode foil strip and the cathode foil strip on the core pack, respectively, and the anode foil strip 4 and the cathode foil strip 5 extend out of the packaging bag 3, and the cover plate 2 is provided with an anode connection column 6 and a cathode connection column 7, and the anode foil strip 4 and the cathode foil strip 5 are electrically connected to the anode connection column 6 and the cathode connection column 7, respectively, and the anode connection column 6 is electrically insulated from the cover plate 2; the cover plate 2 is welded to the square shell 1, and the side of the square shell 1 opposite to the cover plate 2 is provided with an anode external connection column 8 and a cathode external connection column 9 matching the anode connection column 6 and the cathode connection column 7, and the anode external connection column 8 is electrically insulated from the square shell 1.
[0022] In this embodiment, the aluminum electrolytic capacitor can be used individually or multiple aluminum electrolytic capacitors can be assembled together for use. In this embodiment, when multiple aluminum electrolytic capacitors need to be spliced, the anode connection column 6 of one aluminum electrolytic capacitor is plugged into the anode external connection column 8 of another aluminum electrolytic capacitor, and the cathode connection column 7 is plugged into the cathode external connection column 9; thereby completing the splicing between the aluminum electrolytic capacitors; the multiple aluminum electrolytic capacitors after splicing are connected into a whole.
[0023] In this embodiment, the anode connection column 6 and the anode external connection column 8 are insulated from the square housing 1 by the rubber sleeve 10 ; the cathode connection column 7 and the cathode external connection column 9 can also be insulated from the square housing 1 by the rubber sleeve 10 .
[0024] In this embodiment, when splicing is required, it is only necessary to plug the anode connecting column 6 and the anode external connecting column 8, and the cathode connecting column 7 and the cathode external connecting column 9, which is very convenient and does not require additional wire connections.
[0025] In this embodiment, the anode external connection column 8 and the cathode external connection column 9 of a single aluminum electrolytic capacitor are respectively electrically connected to the anode connection column 6 and the cathode connection column 7. When the aluminum electrolytic capacitors need to be connected in parallel, the anode connection columns 6 and the anode external connection columns 8 of the multiple aluminum electrolytic capacitors are electrically connected together, and the cathode connection columns 7 and the cathode external connection columns 9 are electrically connected together to complete the parallel connection of the multiple aluminum electrolytic capacitors.
[0026] In this embodiment, the core package includes an anode foil, an electrolytic paper and a cathode foil; the anode foil, the electrolytic paper and the cathode foil are stacked to form the core package. The anode foil and the cathode foil are respectively provided with an anode tab and a cathode tab; the anode tabs of the anode foil in the core package are stacked together, and the anode foil strip 4 is electrically connected to the anode tab; the cathode tabs of the cathode foil in the core package are stacked together, and the cathode foil strip 5 is electrically connected to the cathode tab. In this embodiment, the anode tab and the cathode tab are respectively formed integrally with the anode foil and the cathode foil.
[0027] In other embodiments, the anode tab and the cathode tab may be respectively welded to the anode foil and the cathode foil by laser welding.
[0028] The square aluminum electrolytic capacitor of the utility model is provided with an anode connection column 6 and a cathode connection column 7 on the cover plate 2, and the anode connection column 6 and the cathode connection column 7 can be plugged into the anode external connection column 8 and the cathode external connection column 9 respectively, so as to complete the splicing between the aluminum electrolytic capacitors. Example
[0029] like Figure 3 and Figure 4 As shown, in this embodiment, the cover plate 2 on the square shell 1 is arranged on the side of the core package, and the anode connection column 6 and the cathode connection column 7 are arranged on the cover plate 2; because the distance between the anode foil strip 4 and the cathode foil strip 5 and the anode connection column 6 and the cathode connection column 7 is relatively far after the anode foil strip 4 and the cathode foil strip 5 extend out of the packaging bag 3, the anode foil strip 4 and the cathode foil strip 5 extend out of the packaging bag 3 and bend to the position of the anode connection column 6 and the cathode connection column 7 and connect. The anode foil strip 4 is tightly attached to the packaging bag 3 through the insulating tape 11, so that the anode foil strip 4 is electrically isolated from the square shell 1. The other parts of this embodiment are the same as those of embodiment 1. Example
[0030] In this embodiment, a plurality of square aluminum electrolytic capacitors are connected in series, thereby increasing the rated voltage of the assembled aluminum electrolytic capacitors. In this embodiment, the anode external connection column 8 and the cathode external connection column 9 of a single aluminum electrolytic capacitor are electrically connected to the anode connection column 6 and the cathode connection column 7, respectively. When assembling, the anode connection column 6 of an aluminum electrolytic capacitor is inserted into the cathode external connection column 9 of the previous aluminum electrolytic capacitor; at the same time, the cathode connection column 7 is inserted into the anode external connection column 8 of the previous aluminum electrolytic capacitor. The other parts of this embodiment are the same as implementation 1.
Claims
1. A square aluminum electrolytic capacitor, characterized in that: The invention comprises a core package, a square shell and a cover plate, wherein the core package is sealed in a packaging bag made of an aluminum-plastic film, and the core package and the packaging bag are arranged in the square shell together through the cover plate; the anode foil and the cathode foil on the core package are electrically connected with an anode foil strip and a cathode foil strip respectively, and the anode foil strip and the cathode foil strip extend out of the packaging bag, and the cover plate is provided with an anode connection column and a cathode connection column, the anode foil strip and the cathode foil strip are electrically connected with the anode connection column and the cathode connection column respectively, and the anode connection column is electrically insulated from the cover plate; the cover plate is welded to the square shell, and the side of the square shell opposite to the cover plate is provided with an anode external connection column and a cathode external connection column matching with the anode connection column and the cathode connection column, and the anode external connection column is electrically insulated from the square shell.
2. The square aluminum electrolytic capacitor according to claim 1, characterized in that: The anode external connection column and the cathode external connection column are electrically connected to the anode connection column and the cathode connection column respectively.
3. The square aluminum electrolytic capacitor according to claim 1 or 2, characterized in that: The core package comprises an anode foil, an electrolytic paper and a cathode foil; the anode foil, the electrolytic paper and the cathode foil are stacked to form the core package.
4. The square aluminum electrolytic capacitor according to claim 3, characterized in that: The anode foil and cathode foil are respectively provided with an anode tab and a cathode tab; the anode tabs of the anode foil in the core package are stacked together, and the anode foil strip is electrically connected to the anode tabs; the cathode tabs of the cathode foil in the core package are stacked together, and the cathode foil strip is electrically connected to the cathode tabs.
5. The square aluminum electrolytic capacitor according to claim 4, characterized in that: The anode tab and the cathode tab are integrally formed with the anode foil and the cathode foil respectively.
6. The square aluminum electrolytic capacitor according to claim 4, characterized in that: The anode tab and the cathode tab are respectively welded to the anode foil and the cathode foil by laser welding.