Capacitor with pressure relief function
By designing a capacitor with a multi-stage pressure relief mechanism, the problem of insufficient pressure management of traditional capacitors under extreme conditions is solved, and step-by-step pressure relief is achieved, thereby improving the safety and lifespan of the capacitor.
Patent Information
- Application Number
- CN202520239290.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Traditional capacitors cannot effectively manage internal pressure under extreme conditions, leading to performance degradation or explosion risks. Existing pressure relief valves cannot be reused after damage and cannot provide step-by-step pressure relief.
Design a capacitor with a multi-stage pressure relief mechanism, in which a first plate, a second plate, a third plate, and a fourth plate are arranged in sequence and connected by a support rod, with the number of pressure relief holes decreasing at each stage, and springs and side skirts are used to achieve step-by-step pressure relief.
This allows for the gradual release of internal pressure within the capacitor, preventing damage due to excessive pressure and improving the capacitor's safety and lifespan.
Smart Images
Figure CN223728611U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to capacitor technical field, specifically is a kind of capacitor with pressure relief function. BACKGROUND
[0002] In electronic equipment and power system, capacitor as key energy storage element, its stability and safety are crucial.
[0003] Traditional capacitor design often neglects the importance of internal pressure management, leading to accumulation of excessive pressure in capacitor under certain extreme conditions, such as high temperature, overcharge or long-term operation; Traditional pressure relief valve will be damaged after experiencing overpressure, cannot be reused, and cannot be stepped pressure relief, thereby leading to such internal pressure accumulation not only affects the performance of capacitor, serious time even leads to capacitor rupture or explosion, poses a serious threat to equipment and personnel safety. SUMMARY
[0004] In view of the deficiencies of the prior art, the utility model provides a kind of capacitor with pressure relief function, solve the problem raised in the above background technology.
[0005] To achieve the above object, the utility model is realized by the following technical scheme: a kind of capacitor with pressure relief function, including aluminum shell, the inside of the aluminum shell is placed with electric core, the upper end of the electric core is connected with lead, the upper end of the aluminum shell is placed with end cover, is provided with fixed plate in the inside of the aluminum shell away from lead one end, the circumferential side of the fixed plate is fixedly connected with connecting rod, the other end of the connecting rod is fixedly connected with the inner side wall of aluminum shell, the one end of the aluminum shell away from lead is provided with perforation, multiple pressure relief mechanisms are provided on the fixed plate, and the multiple pressure relief mechanisms are matched with the perforation.
[0006] Further, the multiple pressure relief mechanisms include first plate, second plate, third plate and fourth plate, the first plate, second plate, third plate and fourth plate are arranged upwards in the perforation in sequence, the middle of the first plate, second plate, third plate and fourth plate is fixed with support rod, the first plate, second plate, third plate and fourth plate are provided with pressure relief hole, and the number of pressure relief holes is sequentially reduced upwards from the first plate, second plate and third plate.
[0007] Further, the lower end circumferential side of the first plate is fixedly connected with side apron, and the side apron is matched and correspondingly arranged with the end cover.
[0008] Further, the lower end of the first plate is fixedly connected with spring, and the lower end of the spring is fixedly connected with the upper end of the fixed plate.
[0009] Further, the lower end surface of the side apron is flush with the inner side surface of the end cover, and the side apron is inclined outward.
[0010] Further, the upper end surface of the fourth plate is flush with the upper end surface of the end cover.
[0011] With respect to the above background art, the capacitor with pressure relief function provided by the present application comprises a capacitor which is very mature at present, and a multi-stage pressure relief mechanism as a core component, and the principle thereof relies on multi-stage pressure relief of the internal pressure through the first plate, the second plate, the third plate, the fourth plate and the pressure relief hole, thereby avoiding excessive internal pressure from affecting the service life of the capacitor.
[0012] The capacitor with pressure relief function has the following beneficial effects compared with the prior art:
[0013] The capacitor with pressure relief function; by setting the multi-stage pressure relief mechanism, when the pressure in the aluminum shell exceeds the set value, the internal gas is pushed upward, the fourth plate drives the whole upward through the support rod, and continuously moves upward with the increase of the pressure, thereby achieving the effect of pressure relief, and by opening the pressure relief hole on the first plate, the second plate and the third plate, the pressure can be released step by step, thereby providing the effect of pressure relief. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a schematic structural view of the whole of the utility model;
[0015] Figure 2 It is a schematic structural view of the internal structure of the aluminum shell section of the utility model;
[0016] Figure 3 It is a schematic structural view of the aluminum shell and the battery cell of the utility model;
[0017] Figure 4 It is a schematic structural view of the second plate, the third plate and the fourth plate of the utility model;
[0018] Figure 5 It is a schematic structural view of the multi-stage pressure relief mechanism of the utility model;
[0019] Figure 6 It is Figure 3 It is an enlarged schematic structural view of position A.
[0020] In the figure: 1, aluminum shell; 2, battery cell; 3, lead wire; 4, end cover; 5, perforation; 6, fixed plate; 7, connecting rod; 8, first plate; 9, side skirt plate; 10, second plate; 11, third plate; 12, fourth plate; 13, support rod; 14, pressure relief hole; 15, spring. DETAILED DESCRIPTION
[0021] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0022] Please refer to Figures 1-6 The utility model provides a technical scheme: a kind of capacitor with pressure relief function, including aluminum shell 1, the inside of aluminum shell 1 is placed with electric core 2, the upper end of electric core 2 is connected with lead 3, the upper end of aluminum shell 1 is placed with end cover 4, be provided with fixed plate 6 in the inside of aluminum shell 1 away from the end of lead 3, fixed plate 6 is fixedly connected with connecting rod 7 on the circumferential side, the other end of connecting rod 7 is fixedly connected with the inside wall of aluminum shell 1, the end of aluminum shell 1 away from lead 3 is equipped with perforation 5, fixed plate 6 is provided with multistage pressure relief mechanism, multistage pressure relief mechanism is matched with the setting of perforation 5;Fixed plate 6 is set in the inside of aluminum shell 1 away from the end of lead 3, connecting rod 7 is fixedly connected on the circumferential side of fixed plate 6, fixed with aluminum shell 1 by connecting rod 7, multistage pressure relief mechanism is set on the upper end of fixed plate 6, the internal pressure is slowly released by multistage pressure relief mechanism, multistage pressure relief mechanism is ejected from perforation 5 by internal pressure, the higher the height of ejection, the faster the pressure relief speed, otherwise, it is smaller, to avoid capacitor damage due to internal pressure.
[0023] As Figure 5 The multistage pressure relief mechanism includes a first plate 8, a second plate 10, a third plate 11 and a fourth plate 12, the first plate 8, the second plate 10, the third plate 11 and the fourth plate 12 are arranged upwardly in the perforation 5 in sequence, a support rod 13 is fixedly connected in the middle of the first plate 8, the second plate 10, the third plate 11 and the fourth plate 12, and a pressure relief hole 14 is formed in the first plate 8, the second plate 10, the third plate 11 and the fourth plate 12, and the number of the pressure relief hole 14 is gradually reduced from the first plate 8, the second plate 10 and the third plate 11 upwardly; the multistage pressure relief mechanism is composed of the first plate 8, the second plate 10, the third plate 11 and the fourth plate 12, the first plate 8, the second plate 10, the third plate 11 and the fourth plate 12 are fixedly connected by the support rod 13, the pressure relief hole 14 is formed in sequence from the first plate 8, the second plate 10 and the third plate 11, and the number of the pressure relief hole 14 is gradually reduced from the first plate 8, the second plate 10 to the third plate 11, as the internal pressure becomes larger and larger, the height of the first plate 8, the second plate 10, the third plate 11 and the fourth plate 12 upwardly also becomes higher and higher, the higher the height of the first plate 8, the second plate 10, the third plate 11 and the fourth plate 12 protrude, the more the number of the pressure relief hole 14, and the faster the pressure relief speed, thereby achieving the effect of multistage pressure relief, and the generation of pressure can be slowed down before the pressure appears.
[0024] As Figure 5 andFigure 6 As shown, the lower end of the first plate 8 is fixedly connected with a side skirt plate 9, and the side skirt plate 9 is arranged in correspondence with the end cover 4; the fixed side skirt plate 9 at the lower end of the first plate 8 can increase the sealing with the through hole 5 and improve the overall sealing performance, and can not only seal but also seal when pressure relief, and can be repeatedly used, and after pressure relief, the whole can be pressed to the inside to form a seal.
[0025] As shown, Figure 6 The lower end of the first plate 8 is fixedly connected with a spring 15, and the lower end of the spring 15 is fixedly connected with the upper end of the fixed plate 6; the spring 15 at the lower end of the first plate 8 can pull the multi-stage pressure relief mechanism, avoid the whole multi-stage pressure relief mechanism from protruding out of the through hole 5, and form a pullback after the pressure relief is completed to avoid falling.
[0026] As shown, Figure 6 The lower end surface of the side skirt plate 9 is flush with the inner end surface of the end cover 4, and the side skirt plate 9 is inclined outward; the outward inclination of the side skirt plate 9 can provide a certain upward resistance, so that only when the designed pressure is reached, the side skirt plate 9 can be squeezed and pushed upward, and the outward inclination can increase the contact area and improve the more sensitive response.
[0027] As shown, Figure 6 The upper end surface of the fourth plate 12 is flush with the upper end surface of the end cover 4; the fourth plate 12 is designed to have a height flush with the upper end surface of the end cover 4, so that the overpressure of the aluminum shell 1 can be directly observed.
Claims
1. A capacitor with pressure relief function, comprising an aluminum shell (1), an electric core (2) is placed in the inside of the aluminum shell (1), a lead wire (3) is connected to the upper end of the electric core (2), an end cover (4) is placed at the upper end of the aluminum shell (1), characterized in that, The fixed plate (6) is arranged inside the aluminum shell (1) and away from one end of the lead (3), the circumferential side of the fixed plate (6) is fixedly connected with the connecting rod (7), the other end of the connecting rod (7) is fixedly connected with the inner side wall of the aluminum shell (1), one end of the aluminum shell (1) away from the lead (3) is provided with a through hole (5), the fixed plate (6) is provided with a multi-stage pressure relief mechanism, and the multi-stage pressure relief mechanism is matched with the through hole (5).
2. The capacitor with pressure relief function according to claim 1, wherein, The multi-stage pressure relief mechanism comprises a first plate (8), a second plate (10), a third plate (11) and a fourth plate (12), the first plate (8), the second plate (10), the third plate (11) and the fourth plate (12) are arranged upwards in the through hole (5) in sequence, the middle of the first plate (8), the second plate (10), the third plate (11) and the fourth plate (12) is fixedly connected with a support rod (13), the first plate (8), the second plate (10), the third plate (11) and the fourth plate (12) are provided with pressure relief holes (14), and the number of the pressure relief holes (14) is gradually reduced upwards from the first plate (8), the second plate (10) and the third plate (11).
3. The capacitor with pressure relief function according to claim 2, wherein, The lower end of the first plate (8) is fixedly connected with a side skirt plate (9), and the side skirt plate (9) is matched with the end cover (4).
4. The capacitor with pressure relief function according to claim 2, wherein, The lower end of the first plate (8) is fixedly connected with a spring (15), and the lower end of the spring (15) is fixedly connected with the upper end of the fixed plate (6).
5. The capacitor with pressure relief function according to claim 3, wherein, The lower end surface of the side skirt plate (9) is flush with the inner side end surface of the end cover (4), and the side skirt plate (9) is inclined outward.
6. The capacitor with pressure relief function according to claim 2, wherein, The upper end surface of the fourth plate (12) is flush with the upper end surface of the end cover (4).