Gas storage space structural member suitable for formation exhaust
By designing gas storage space structural components and one-way exhaust components, the problem of gas discharge during capacitor formation and use was solved, extending the service life and improving the electrolyte injection efficiency, while avoiding electrolyte leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-07
AI Technical Summary
The gas generated during the formation and use of the capacitor cannot be discharged in time, which leads to an increase in internal gas pressure, affects the service life, and poses a risk of casing rupture and electrolyte leakage. At the same time, the electrolyte injection speed is slow.
Design a gas storage space structure, including upper and lower grooves and a one-way exhaust device. The gas produced by chemical formation is discharged through the one-way exhaust device. During use, the gas enters the lower groove for storage. An explosion-proof valve controls the gas pressure to prevent direct leakage. The liquid injection port design improves flow efficiency.
Extend capacitor lifespan, prevent gas and electrolyte leakage, improve electrolyte filling efficiency, and ensure normal capacitor operation.
Smart Images
Figure CN224096572U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery capacitors, specifically to a gas storage space structure suitable for formation exhaust. Background Technology
[0002] During the formation process of a capacitor, internal chemical reactions occur, producing gases. If these gases are not released in time, they will accumulate inside the capacitor, causing the internal pressure to rise. Furthermore, capacitors also produce gases during use. When the pressure reaches a certain level, the capacitor will release gas, rendering it unusable and undoubtedly affecting its lifespan. Moreover, when the pressure reaches a certain level, there is a risk that the casing will rupture, causing the electrolyte to evaporate or leak into the external environment.
[0003] In addition, because the electrolyte injection hole on the capacitor casing is directly connected to the electrolyte flow channel formed by the gap between the internal components of the capacitor, and the flow channel is narrow, the electrolyte injection speed will be slower when adding electrolyte. Utility Model Content
[0004] The present invention aims to provide a gas storage space structure suitable for chemical formation exhaust, so as to extend the service life of capacitors, while avoiding direct evaporation or leakage of electrolyte into the external environment, and solving the problem of slow electrolyte injection speed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a gas storage space structure suitable for chemical formation exhaust, comprising a gas storage space body, the gas storage space body including an upper groove and a lower groove with opposite openings, the gas storage space body being provided with an injection port communicating with the upper groove, and a sealing component installed in the injection port; a boss is fixed on one side of the opening of the upper groove on the gas storage space component, and a through groove communicating with the lower groove is provided on the boss and the gas storage space body, and a one-way exhaust component is installed in the through groove.
[0006] The technical advantages of this solution are as follows: During the capacitor aging process, the gas generated during formation is discharged through a one-way exhaust device, reducing the amount of gas inside the capacitor and avoiding a significant increase in internal gas pressure during formation. Simultaneously, the sealed end cap with an explosion-proof valve is sealed and welded to the outer casing after formation venting and electrolyte replenishment, forming an additional gas storage space together with the lower groove of the gas storage space body. Gas generated during capacitor use is discharged into the lower groove via the one-way exhaust device, further reducing the internal gas pressure during capacitor use. In other words, the gas inside the capacitor is discharged into the lower groove, delaying the direct escape of gas from the capacitor. The lower groove does not affect the normal use of the capacitor, preventing the capacitor from prematurely reaching the required pressure and venting outwards, thus extending its service life. Furthermore, once the pressure in the lower groove reaches a certain level, the explosion-proof valve on the sealed end cap will open to release pressure, but the one-way venting device still isolates the capacitor's interior from the external environment, preventing the electrolyte from directly evaporating or leaking into the external environment. Additionally, during the electrolyte injection process, the electrolyte flows into the injection port. Even if the internal flow channels of the capacitor are narrow, the electrolyte can be temporarily stored in the upper groove before flowing into the enclosed space of the outer casing, filling the capacitor's interior without affecting continuous electrolyte injection and improving injection efficiency.
[0007] Preferably, as an improvement, the through groove includes a primary through groove, a secondary through groove, and a tertiary through groove with successively decreasing diameters, all coaxial. The primary through groove is located on the boss, while the secondary and tertiary through grooves are located on the gas storage space body. The exhaust component is installed in the secondary through groove.
[0008] Preferably, as an improvement, the sealing component includes a rubber plug and a sealing pin, the injection port is located at the top of the gas storage space body and includes an upper circular hole and a lower conical hole, the rubber plug is disposed in the conical hole and the sealing pin is disposed in the circular hole.
[0009] Preferably, as an improvement, there are two bosses, and the through slot is located on the boss near the top of the gas storage space body.
[0010] Preferably, as an improvement, the boss is integrally formed on the gas storage space component.
[0011] Preferably, as an improvement, the one-way exhaust component is a one-way exhaust valve. Attached Figure Description
[0012] Figure 1 This is the left view of the present invention;
[0013] Figure 2 This is the right view of the present invention;
[0014] Figure 3 for Figure 2 Sectional view along axis AA;
[0015] Figure 4 This is a schematic diagram of the assembly of the positive terminal of a capacitor. Detailed Implementation
[0016] The following detailed description illustrates the specific implementation method:
[0017] The reference numerals in the accompanying drawings include: upper groove 1, lower groove 2, injection port 3, boss 4, secondary through groove 5, and one-way exhaust valve 6.
[0018] The basic implementation examples are as follows: Figure 1-4 As shown: Figure 1-3 The diagram illustrates a gas storage space structure suitable for chemical formation exhaust, comprising a gas storage space body. The gas storage space body includes an upper groove 1 and a lower groove 2 with opposite openings. A liquid injection port 3 is provided on the gas storage space body, communicating with the upper groove 1. The liquid injection port 3 is located at the top of the gas storage space body, and a liquid injection port 3 is also provided at this location on the capacitor casing. A sealing component is installed inside the liquid injection port 3. The liquid injection port 3 on the gas storage space body includes an upper circular hole and a lower conical hole. The sealing component includes a rubber plug and a sealing pin; the rubber plug is disposed within the conical hole, and the sealing pin is disposed within the circular hole.
[0019] like Figure 3 As shown, the left side of the gas storage space component has two integrally formed bosses 4. The bosses 4 and the gas storage space body have through grooves that connect to the lower groove 2. The through grooves include a first-stage through groove, a second-stage through groove 5 and a third-stage through groove with diameters decreasing sequentially and coaxially. The first-stage through groove is located on the bosses 4, and the second-stage through groove 5 and the third-stage through groove are located on the gas storage space body. A one-way exhaust component is installed in the second-stage through groove 5. In this design, the one-way exhaust component is selected as a one-way exhaust valve 6.
[0020] like Figure 4 As shown, the dimensions of the gas storage space body and the internal dimensions of the outer shell can be matched and welded together. At the same time, the gas storage space body can also be welded to the sealing end cap with an explosion-proof valve so that the lower groove 2 of the gas storage space body forms an additional gas storage space.
[0021] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A gas storage space structure suitable for chemical formation exhaust, characterized in that: The gas storage space includes an upper groove and a lower groove with opposite openings. The gas storage space is provided with a liquid injection port that connects to the upper groove, and a sealing component is installed in the liquid injection port. A boss is fixed on one side of the opening of the upper groove on the gas storage space component. The boss and the gas storage space are provided with a through groove that connects to the lower groove, and a one-way exhaust component is installed in the through groove.
2. A gas storage space structure for chemical formation exhaust gas as described in claim 1, characterized in that: The passage includes a primary passage, a secondary passage, and a tertiary passage with a diameter decreasing sequentially from the same axis. The primary passage is located on the boss, while the secondary and tertiary passages are located on the gas storage space body. The exhaust component is installed in the secondary passage.
3. A gas storage space structure suitable for chemical formation exhaust gas according to claim 2, characterized in that: The sealing components include a rubber plug and a sealing pin. The injection port is located at the top of the gas storage space body and includes an upper circular hole and a lower conical hole. The rubber plug is placed inside the conical hole, and the sealing pin is placed inside the circular hole.
4. A gas storage space structure suitable for chemical formation exhaust gas according to claim 3, characterized in that: There are two protrusions, and the through slot is located on the protrusion near the top of the gas storage space body.
5. A gas storage space structure suitable for chemical formation exhaust according to claim 4, characterized in that: The boss is integrally formed on the gas storage space component.
6. A gas storage space structure suitable for chemical formation exhaust according to claim 5, characterized in that: The one-way exhaust component is a one-way exhaust valve.