A short-circuit-proof electrolytic capacitor
By wrapping the insulating member at the upper end of the core package of the electrolytic capacitor, an insulating cavity is formed to isolate the lead strip, which solves the problem that the bent lead strip of the electrolytic capacitor is easily touched by the aluminum shell, causing short circuit, and effective short-circuit protection and leakage prevention of electrolyte are achieved.
Patent Information
- Application Number
- CN202420334861.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-02-23
AI Technical Summary
Existing electrolytic capacitors are prone to touch the aluminum shell when bending the lead strip, resulting in short circuit, especially in capacitors with diameters less than 25mm.
By wrapping the insulating member at the upper end of the core bag, the insulating member is made of thin insulating materials such as tape, insulating paper, and insulating film to form an insulating cavity to isolate the lead strips to prevent them from touching the aluminum shell.
It effectively avoids the short circuit caused by the lead strip touching the aluminum shell after bent, and at the same time prevents the electrolyte from leaking from the gap between the outer wall of the core bag and the aluminum shell.
Smart Images
Figure CN222705321U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrolytic capacitors, in particular to a short-circuit-proof electrolytic capacitor. Background Art
[0002] Capacitors are one of the commonly used components in circuit design. Their reliability directly affects whether the entire circuit can work properly. The life of aluminum electrolytic capacitors, sheet capacitors and film capacitors is one of the important indicators that affect their reliability. What we usually call aluminum electrolytic capacitors generally refer to polar electrolytic capacitors. The structure of this type of capacitor is similar to the foil winding structure. They are all made of aluminum foil as electrodes and then led out by lead wires. The electrolyte of electrolytic capacitors is generally composed of boric acid, ammonia water, ethylene glycol, etc., but the inside of the electrolytic capacitor is not filled with liquid, but the electrolyte is soaked in electrolytic paper to act as the negative electrode of the capacitor. But a piece of paper obviously cannot be used as the negative electrode in the traditional perception of capacitors, so another aluminum foil is needed to be bonded to the paper soaked in electrolyte solution.
[0003] However, when the lead strips are connected to the core package through the cover plate and pressed and located inside the aluminum shell, the lead strips are easily bent when pressed, especially for capacitors with a diameter less than 25 mm, which may cause the bent lead strips to touch the aluminum shell, resulting in a short circuit. Utility Model Content
[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide an anti-short-circuit electrolytic capacitor to solve the problem proposed in the above background technology that the bent lead strips are easy to touch the aluminum shell and cause a short circuit.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an anti-short-circuit electrolytic capacitor, comprising a rubber sleeve, an aluminum shell is arranged inside the rubber sleeve, an inner core is arranged inside the aluminum shell, and a cap is arranged on the top of the rubber sleeve and is sleeved on the top of the aluminum shell, and an insulating cavity is arranged at one end of the inner core close to the cap.
[0006] Preferably, the inner core includes a core package, a lead-out strip, a cover plate and an insulating member, the core package is located inside the aluminum shell, a lead-out strip is led out of the core package, the lead-out strip is connected to the cover plate, an insulating member is provided at one end of the core package close to the cover plate, and the insulating member and the cover plate form the insulating cavity.
[0007] Preferably, the tops of the rubber sleeve and the aluminum shell are both open structures, and one end of the insulating cavity close to the cap fits with the cover plate.
[0008] Preferably, the diameter of the cover plate is larger than the diameter of the core package, and the insulating member is arranged on the outer wall surface of the core package.
[0009] Preferably, the insulating member is any one of adhesive tape, insulating paper, and insulating film.
[0010] Preferably, the insulating member is wrapped around the upper end of the core package, and the top of the insulating member is higher than the top of the core package.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] The utility model wraps an insulating member around the upper end of the core package, and the insulating member is a kind of thin insulating material such as tape, insulating paper, and insulating film. Then, when the cover plate is pressed together, the cover plate can be stuck into the insulating member to form an insulating cavity between the top end of the core package and the cover plate, so that the lead strip is isolated by the insulating member after being bent, so as to avoid the lead strip touching the aluminum shell after being bent to cause a short circuit, and at the same time, it can prevent the electrolyte from leaking from the gap between the outer wall of the core package and the aluminum shell. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the split structure of the electrolytic capacitor of the utility model.
[0014] In the figure: 1. Rubber sleeve; 2. Aluminum shell; 3. Core package; 4. Lead strip; 5. Cover plate; 6. Insulation part; 7. Cover cap. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] See also Figure 1 The utility model provides a technical solution: an anti-short circuit electrolytic capacitor, comprising a rubber sleeve 1, an aluminum shell 2 is arranged inside the rubber sleeve 1, an inner core is arranged inside the aluminum shell 2, and a cap 7 is arranged on the top of the rubber sleeve 1, and an insulating cavity is arranged at one end of the inner core close to the cap 7.
[0017] The inner core includes a core package 3, a lead-out strip 4, a cover plate 5 and an insulating member 6. The core package 3 is located inside the aluminum shell 2. A lead-out strip 4 is led out of the core package 3. The lead-out strip 4 is connected to the cover plate 5. An insulating member 6 is provided at one end of the core package 3 close to the cover plate 5. The insulating member 6 and the cover plate 5 form an insulating cavity, so that the insulating member 6 forms an insulating cavity with the cover plate 5 at the top of the core package 3, which can isolate the lead-out strip 4.
[0018] The tops of the rubber sleeve 1 and the aluminum shell 2 are both open structures, and one end of the insulating cavity close to the cap 7 fits with the cover plate 5, so that the aluminum shell 2 can be stably stuck in the rubber sleeve 1.
[0019] The diameter of the cover plate 5 is larger than the diameter of the core package 3 , and the insulating member 6 is arranged on the outer wall surface of the core package 3 so that the cover plate 5 can be stuck in the insulating member 6 .
[0020] The insulating member 6 is any one of adhesive tape, insulating paper and insulating film, so that the insulating member 6 can play an effective insulating and isolating effect.
[0021] The insulating member 6 is wrapped around the upper end of the core package 3 , and the top of the insulating member 6 is higher than the top of the core package 3 , so that the cover plate 5 can be inserted into the insulating member 6 when the cover plate 5 is pressed together.
[0022] Working principle: When using the anti-short-circuit electrolytic capacitor, the core package 3 is stuck in the aluminum shell 2, and the aluminum shell 2 is filled with electrolyte. By wrapping the insulating part 6 around the upper end of the core package 3, the insulating part 6 is a thin insulating material such as tape, insulating paper, and insulating film. Then when the cover plate 5 is pressed, the cover plate 5 can be stuck in the insulating part 6 to form an insulating cavity between the top of the core package 3 and the cover plate 5, so that the lead-out strip 4 is isolated by the insulating part 6 after bending, so as to avoid the lead-out strip 4 touching the aluminum shell 2 after bending and causing a short circuit. At the same time, it can prevent the electrolyte from leaking from the gap between the outer wall of the core package 3 and the aluminum shell 2. Finally, the cap 7 is covered on the top of the rubber sleeve 1, and the cap 7 is stuck on the outer wall of the aluminum shell 2 to form an electrolytic capacitor.
[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A short-circuit-proof electrolytic capacitor, comprising a rubber sleeve (1), characterized in that: An aluminum shell (2) is arranged inside the rubber sleeve (1), an inner core is arranged inside the aluminum shell (2), and a cap (7) sleeved on the top of the aluminum shell (2) is arranged on the top of the rubber sleeve (1), and an insulating cavity is arranged at one end of the inner core close to the cap (7); The inner core comprises a core package (3), a lead strip (4), a cover plate (5) and an insulating member (6); the core package (3) is located inside the aluminum shell (2); a lead strip (4) is led out from the core package (3); the lead strip (4) is connected to the cover plate (5); an insulating member (6) is provided at one end of the core package (3) close to the cover plate (5); the insulating member (6) and the cover plate (5) form the insulating cavity.
2. The short-circuit-proof electrolytic capacitor according to claim 1, characterized in that: The tops of the rubber sleeve (1) and the aluminum shell (2) are both open structures, and one end of the insulating cavity close to the cover cap (7) fits with the cover plate (5).
3. The short-circuit-proof electrolytic capacitor according to claim 2, characterized in that: The diameter of the cover plate (5) is greater than the diameter of the core package (3), and the insulating member (6) is arranged on the outer wall surface of the core package (3).
4. The short-circuit-proof electrolytic capacitor according to claim 2, characterized in that: The insulating member (6) is any one of an adhesive tape, insulating paper, and an insulating film.
5. The short-circuit-proof electrolytic capacitor according to claim 3, characterized in that: The insulating member (6) is wrapped around the upper end of the core package (3), and the top of the insulating member (6) is higher than the top of the core package (3).