Super capacitor explosion-proof valve and hybrid super capacitor

Abstract

The embodiment of the utility model discloses a super capacitor explosion-proof valve and a hybrid super capacitor, the explosion-proof valve comprises a capacitor cover plate, an outer ring groove, an inner ring groove and a plurality of inner diameter grooves are etched on the capacitor cover plate, the inner ring groove is arranged in the middle of the outer ring groove, and the inner diameter grooves are connected with the outer ring groove and the inner ring groove. According to the utility model, the explosion-proof valve is arranged on the capacitor cover plate, the design of the capacitor cover plate is simplified by the integrated structure of the capacitor cover plate and the explosion-proof valve, and the manufacturing cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of hybrid supercapacitor production, in particular to a supercapacitor explosion-proof valve and a hybrid supercapacitor. Background Technique

[0002] Hybrid supercapacitors have broad application prospects in electric vehicles, portable electronic devices, renewable energy systems (such as solar and wind energy storage), industrial equipment, and smart grids. Hybrid supercapacitors have the advantages of high power density, fast charge and discharge, long cycle life, and high efficiency. The explosion-proof valve of a hybrid supercapacitor is to ensure that the device can safely release the internal pressure in case of overcharging, overheating, or other abnormal conditions, avoiding explosion or other dangers.

[0003] Gas accumulation and internal pressure increase may occur in hybrid supercapacitors under extreme working conditions, leading to potential safety hazards. The design of the explosion-proof valve aims to prevent this situation and ensure the safety and reliability of the device. The explosion-proof valve usually consists of a pressure-sensitive element (such as a film or a spring) and a release mechanism. When the internal pressure exceeds the design threshold, the explosion-proof valve will automatically open, release the excess pressure, and close again after the pressure returns to normal. The materials of the explosion-proof valve must have good chemical resistance, high temperature resistance, and mechanical strength. Commonly used materials include stainless steel, aluminum alloy, and high-temperature resistant plastics. The opening pressure of the explosion-proof valve must be precisely set to ensure that it will not be accidentally triggered within the normal operating range, and at the same time, it can respond in a timely manner in case of danger. The explosion-proof valve needs to have a fast response ability to ensure that the pressure is released in a timely manner when the pressure rises rapidly, avoiding damage to the device.

[0004] Currently, for the hard shell packaging structure of most supercapacitors, in order to avoid excessive temperature during use, resulting in excessive internal air pressure and causing monomer explosion, most current options are to process weak parts on the cylindrical structure to enable timely pressure relief of the internal energy, reducing hazards and losses. In actual processes, it is difficult to achieve precise pressure relief, posing certain potential safety hazards to the product. It is still difficult to precisely control the explosion-proof valve structure to achieve different levels of explosion-proof pressure and explosion-proof consistency, and there are still potential safety hazards. Summary of the Utility Model

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a supercapacitor explosion-proof valve and a hybrid supercapacitor to solve the existing potential safety hazard problem.

[0006] To solve the above technical problem, the embodiments of the utility model propose a supercapacitor explosion-proof valve, including a capacitor cover plate, on which an outer ring groove, an inner ring groove, and a plurality of inner diameter grooves are etched. The inner ring groove is located in the middle of the outer ring groove, and the inner diameter grooves connect the outer ring groove and the inner ring groove.

[0007] Further, the outer ring groove is a hexagonal annular groove, the inner ring groove is a circular groove, and there are 6 inner diameter grooves; one ends of the 6 inner diameter grooves are respectively connected to six corners of the hexagon, and the extension lines of the other ends of the 6 inner diameter grooves pass through the center of the circular groove.

[0008] Further, the depth of the inner ring groove and the inner diameter groove is greater than or equal to the depth of the outer ring groove.

[0009] Further, the multiple inner diameter grooves divide the area between the outer ring groove and the inner ring groove into multiple equal parts.

[0010] Further, the depth ranges of the inner ring groove, the inner diameter groove, and the outer ring groove are all 10% - 30% of the thickness of the capacitor cover plate.

[0011] Correspondingly, an embodiment of the present invention further provides a hybrid supercapacitor, including the above-mentioned supercapacitor explosion-proof valve.

[0012] The beneficial effects of the present invention are as follows: The present invention can avoid the problem that the internal temperature of the hybrid supercapacitor is too high during use, resulting in too large internal air pressure and an explosion risk, thereby solving the problem of potential safety hazards of the product; the structure of the present invention is simple, the processing is convenient, the use is convenient, and the explosion-proof pressure can be adjusted. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the supercapacitor explosion-proof valve according to an embodiment of the present invention.

[0014] Explanation of the Reference Numerals in the Drawings

[0015] Capacitor cover plate 1, outer ring groove 2, inner diameter groove 3, inner ring groove 4. Detailed Embodiments

[0016] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0017] In the embodiments of the present invention, if there are directional indications (such as up, down, left, right, front, back...), they are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0018] In addition, in the present invention, the descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0019] Please refer to Figure 1 , the explosion-proof valve of the supercapacitor in the embodiment of the present utility model includes a capacitor cover plate. The round hole in the center of the capacitor cover plate is a liquid injection hole.

[0020] The capacitor cover plate is etched with an outer ring groove, an inner ring groove and a plurality of inner diameter grooves. The inner ring groove is located in the middle of the outer ring groove, and the inner diameter grooves connect the outer ring groove and the inner ring groove. The present utility model adjusts the explosion-proof pressure by designing the size of the inner ring groove area.

[0021] The present utility model arranges the explosion-proof valve on the capacitor cover plate. The integrated structure of the capacitor cover plate and the explosion-proof valve simplifies the design of the capacitor cover plate and saves the manufacturing cost.

[0022] As an implementation manner, the outer ring groove is a regular hexagon-shaped annular groove, the inner ring groove is a circular groove, and there are 6 inner diameter grooves; one ends of the 6 inner diameter grooves are respectively connected to the six corners of the hexagon, and the extension lines of the other ends of the 6 inner diameter grooves pass through the center of the circular groove. That is, the 6 inner diameter grooves divide the area between the outer ring groove and the inner ring groove into six equal parts. Preferably, the side length range of the regular hexagon-shaped annular groove is 8 mm - 12 mm, and the diameter range of the circular groove is 3 mm - 10 mm.

[0023] When the internal air pressure of the explosion-proof valve of the present utility model increases, the regular hexagon structure has good pressure-receiving consistency, and the size of the internal circular area can be adjusted, so that the explosion-proof level is controllable.

[0024] As an implementation manner, the depth of the inner ring groove and the inner diameter groove is greater than or equal to the depth of the outer ring groove, which can make the positions of the inner ring groove and the inner diameter groove easier to expand when receiving internal pressure, improving the performance of the supercapacitor explosion-proof valve and the rapid response ability. The depth ranges of the inner ring groove, the inner diameter groove and the outer ring groove are all 10% - 30% of the thickness of the capacitor cover plate. Preferably, the depth ranges of the inner ring groove, the inner diameter groove and the outer ring groove are 0.1 mm - 1.5 mm. The actual depth can be adjusted according to the pressure threshold set according to actual needs.

[0025] The hybrid supercapacitor in the embodiment of the present utility model includes a supercapacitor explosion-proof valve.

[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalent scope.

Claims

1. A supercapacitor explosion-proof valve, including a capacitor cover plate, characterized in that, The capacitor cover plate is etched with an outer ring groove, an inner ring groove, and a plurality of inner diameter grooves. The inner ring groove is located in the middle of the outer ring groove, and the inner diameter grooves connect the outer ring groove and the inner ring groove.

2. The explosion-proof valve of the supercapacitor according to claim 1, characterized in that, The outer ring groove is a regular hexagon-shaped annular groove, the inner ring groove is a circular groove, and there are 6 inner diameter grooves. One ends of the 6 inner diameter grooves are respectively connected to the six corners of the hexagon, and the extension lines of the other ends of the 6 inner diameter grooves pass through the center of the circular groove.

3. The supercapacitor explosion-proof valve according to claim 1, characterized in that The depth of the inner ring groove and the inner diameter grooves is greater than or equal to the depth of the outer ring groove.

4. The explosion-proof valve of the supercapacitor according to claim 1, characterized in that, The plurality of inner diameter grooves divide the area between the outer ring groove and the inner ring groove into multiple equal parts.

5. The explosion-proof valve of the supercapacitor according to claim 1, characterized in that, The depth ranges of the inner ring groove, the inner diameter grooves, and the outer ring groove are all 10% - 30% of the thickness of the capacitor cover plate.

6. A hybrid supercapacitor, characterized in that, It includes the supercapacitor explosion-proof valve according to any one of claims 1 - 5.

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