Combined self-healing capacitor
By arranging aluminum cylinder capacitors in parallel and connecting them with copper strips, the problems of heat dissipation and shutdown after damage of combined self-healing capacitors are solved, achieving good heat dissipation and reliability.
Patent Information
- Application Number
- CN202520339372.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Commercially available combined self-healing capacitors have poor heat dissipation and cannot be effectively shut down after damage.
The aluminum cylinder capacitor units are arranged in parallel and connected in parallel through the outgoing copper busbars. Each capacitor unit is connected by a copper strip. The outer shell design is eliminated to improve heat dissipation. In case of damage, the flexibility of the copper strip allows the unit to be taken out of operation.
It achieves excellent heat dissipation and reliable removal of damaged units, extends the lifespan of capacitors, and allows for flexible capacity expansion.
Smart Images

Figure CN223911535U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the capacitor electrical equipment field, concretely relates to a combined self-healing capacitor. BACKGROUND
[0002] The combined self-healing capacitor on the market is usually filled into the shell in parallel with multiple cores, then filled with pouring material, and then sealed by welding the cover of the shell, and the capacitor has a large volume and poor heat dissipation effect; another capacitor structure is assembled in parallel by filling glue into multiple small units respectively, then assembled into the shell, and a heat dissipation window is added to the shell to relieve part of the heat dissipation, but the capacitor cannot be effectively taken out of operation after damage. SUMMARY
[0003] The utility model discloses a combined self-healing capacitor which has a simple structure and good heat dissipation effect.
[0004] The technical scheme for achieving the above-mentioned purpose includes the following contents.
[0005] The capacitor of the patent application can not only solve the heat dissipation problem, but also effectively solve the problem of taking out of operation after damage.
[0006] A combined self-healing capacitor includes a plurality of cylindrical aluminum cylinder capacitor units, each aluminum cylinder capacitor unit is provided with two wiring terminals at the top, the aluminum cylinder capacitor units are arranged in parallel in a row, and the bottom is connected and fixed by a common strip-shaped connecting plate, the wiring terminals of the aluminum cylinder capacitor units are connected in parallel by two parallel outgoing copper bars, the outgoing copper bars are formed by crimping copper braid wire and copper connecting pieces, and one end of each of the two outgoing copper bars is taken as an outgoing terminal of the capacitor.
[0007] Further, the aluminum cylinder capacitor unit is provided with three.
[0008] Further, the aluminum cylinder capacitor unit is cylindrical.
[0009] Further, the two ends of the strip-shaped connecting plate are provided with lifting lugs upward to facilitate hoisting.
[0010] Further, the two outgoing terminals are arranged on the two sides of the capacitor, the outgoing terminals are crimped with copper connecting pieces, the copper connecting pieces are bent upward, the bent part is provided with a mounting hole for external electrical connection.
[0011] The combined self-healing capacitor of the utility model is composed of aluminum cylinder units, does not need to be installed with a shell, can effectively dissipate the heat of the capacitor, prolongs the service life of the capacitor, connects each capacitor unit by using a woven copper belt, utilizes the softness of the copper belt, thereby does not affect the action of the unit protection device, can effectively take out the damaged unit from operation, and increasing the volume or quantity of the aluminum cylinder capacitor unit can increase the total capacity of the capacitor, and the assembly is flexible. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 The structure of the combined self-healing capacitor is shown in the embodiment.
[0013] In the figure, 1 is an outgoing bus copper bar; 1-1 is a copper braid; 1-2 is a copper connecting piece; 1-3 is a mounting hole; 2 is a connecting plate; 3 is an ear; and 4 is an aluminum cylinder capacitor unit. DETAILED DESCRIPTION
[0014] The utility model will be specifically explained below in combination with the embodiment.
[0015] Referring to Figure 1 A combined self-healing capacitor comprises three cylindrical aluminum cylinder capacitor units 4 arranged in parallel, two outgoing bus copper bars 1, and a base. The aluminum cylinder capacitor units 4 have two wire terminals at the top and mounting studs at the bottom for mounting and fixing. The outgoing bus copper bars 1 are formed by pressing the copper braid 1-1 and the copper connecting piece 1-2. Each bus copper bar 1 is provided with three matching holes for facilitating assembly with the wire terminals at the top of the aluminum cylinder capacitor units 4. The two outgoing bus copper bars 1 are arranged in parallel, and the wire terminals of the three aluminum cylinder capacitor units 4 are connected in parallel. The copper connecting pieces 1-2 at one end of the two outgoing bus copper bars 1 are used as two outgoing terminals of the combined self-healing capacitor. The two outgoing terminals are arranged on the two sides of the combined self-healing capacitor. The two copper connecting pieces 1-2 serving as the outgoing terminals are bent upward at an angle of 90°. Mounting holes 1-3 are formed at the bent parts for electrical connection with the outside. The base comprises a steel connecting plate 2 and two ears 3. The connecting plate 2 is provided with through holes matching the positions of the three aluminum cylinder capacitor units 4 for mounting and fixing the aluminum cylinder capacitor units 4 in cooperation with the studs at the bottom of the aluminum cylinder capacitor units 4. The two ears 3 are connected to the two ends of the connecting plate 2, respectively, for facilitating transportation.
[0016] The combined self-healing capacitor of the embodiment has the advantages of simple structure, convenient installation, good overall heat dissipation effect, convenient expansion, and reliable work.
Claims
1. A combined self-healing capacitor comprising a number of cylindrical aluminium can capacitor units, each aluminium can capacitor unit being provided at the top with two connection terminals, characterized in that The aluminum cylinder capacitor units are arranged in parallel, and the bottoms are fixed by a common strip-shaped connecting plate.
2. The combination self-healing capacitor of claim 1, wherein The aluminum cylinder capacitor unit is provided with three.
3. The combination self-healing capacitor of claim 1, wherein The aluminum cylinder capacitor unit is cylindrical.
4. The combination self-healing capacitor of claim 1, wherein The strip-shaped connecting plate is provided with lifting lugs at both ends thereof.
5. The combination self-healing capacitor of claim 1, wherein, Two outgoing terminals are arranged on both sides of the capacitor, and the outgoing terminals are crimped with copper connecting pieces, the copper connecting pieces are bent upwards, the bent portions are provided with mounting holes for external electrical connection.