CN214152717U

CN214152717U - Explosion-proof type ultracapacitor system

Info

Publication number: CN214152717U
Application number: CN202023295654.1U
Authority: CN
Inventors: 王国喜; 刘福杰; 邢正; 刘想
Original assignee: Zhenjiang College
Current assignee: Zhenjiang College
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-07
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses an explosion-proof type ultracapacitor system. The core winding machine comprises a shell, a core roll arranged in the shell and an end cover arranged at the upper part of the shell, wherein a sealing plug for sealing the core roll and a fixed baffle arranged on the sealing plug are arranged in the shell, and the core roll is wound on a central fixed column in the shell; the top of the core roll is provided with a positive foil guiding strip and a negative foil guiding strip; electrolyte is injected into the shell; the end cover is provided with two tabs respectively welded with the anode foil guiding strip and the cathode foil guiding strip; the side wall of the shell is provided with an inwards sunken strip-shaped explosion-proof groove. The beneficial effects are that: the structure design is compact, the product reliability is good, the deformation of the shell of the super capacitor is improved, and the opening time of the explosion-proof valve of the product is delayed, so that the service life of the super capacitor is prolonged, and the durability of the super capacitor is effectively improved; in addition, the large-area line paralysis caused by electrolyte leakage is prevented, and the circuit is protected.

Description

Explosion-proof type ultracapacitor system

Technical Field

The utility model relates to a capacitor equipment, specific explosion-proof type ultracapacitor system that says so.

Background

The super capacitor (also called electrochemical capacitor) is a novel charge storage element, compared with a common battery, the super capacitor has the advantages of large power density, large-current charge and discharge support, long cycle life, environmental protection, no pollution and good temperature characteristic, compared with the common capacitor, the super capacitor has the double functions of the traditional electrolytic capacitor and the battery, the power density is far higher than that of the battery, and the charge and discharge speed is much higher than that of the battery; the energy density is much higher than that of the traditional electrolytic capacitor; compared with the traditional electrolytic capacitor and battery, the super capacitor has the advantages of small volume, large energy density, high charging and discharging speed, long cycle life, high discharging power, wide working temperature range (-40-85 ℃), good reliability, low cost and the like. Therefore, the super capacitor is becoming a novel, efficient, practical, green and environment-friendly rapid charging and discharging energy storage device. Has wide application prospect in the fields of energy, automobiles, medical treatment and health, electronics, military and the like.

Although the advantages of the super capacitor are many, the inherent defects of the super capacitor are obvious due to the characteristics of the super capacitor, specifically, the super capacitor can generate gas continuously, so that the gas pressure inside the super capacitor shell is increased continuously, the aluminum shell of the capacitor is deformed and even burst, and electrolyte leakage is caused.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a can improve shell deformation problem, delay the time that the explosion-proof valve of product was opened to extension ultracapacitor system's life effectively improves the explosion-proof type ultracapacitor system of ultracapacitor system's durability.

In order to solve the technical problem, the utility model discloses an explosion-proof type supercapacitor, including the casing, install in the core book in the casing and set up the end cover in casing upper portion, be provided with the sealing plug that is used for rolling up the seal mouth to the core in the casing and the fixed stop that sets up on the sealing plug, the core book is rolled up on the central fixed column in the casing; the top of the core roll is provided with a positive foil guiding strip and a negative foil guiding strip; electrolyte is injected into the shell; the end cover is provided with two tabs respectively welded with the anode foil guiding strip and the cathode foil guiding strip; the side wall of the shell is provided with an inwards sunken strip-shaped explosion-proof groove.

The sealing plug is provided with a hole; the upper end of the central fixing column penetrates through the sealing plug through the hole to be fixedly connected with the fixed baffle, and the lower end of the central fixing column is fixedly connected with the bottom center of the shell.

The shell is connected with an explosion-proof valve positioned in the strip-shaped explosion-proof groove.

A safety cavity is arranged between the fixed baffle and the end cover, the positive electrode foil leading strip and the negative electrode foil leading strip penetrate through the safety cavity and are welded with the lower ends of two pole lugs of the end cover, and the fixed baffle and the sealing plug are provided with air leakage holes.

The shell is provided with an annular explosion-proof recess positioned outside the safety cavity.

The positive electrode foil guiding strip and the negative electrode foil guiding strip are a bent foil guiding strip and a tensioned foil guiding strip.

The depth of the strip-shaped explosion-proof groove is 1/2-1/3 of the thickness of the shell, and the sunken depth of the annular explosion-proof groove is 1/6-1/8 of the outer diameter of the shell.

And a radiator is also arranged on the central fixing column on the outer side of the bottom of the shell.

The shell is made of aluminum or aluminum alloy materials, and the end cover is made of phenolic resin or engineering plastics.

The lug is an aluminum column with the tin-plated surface.

Compared with the prior art, the beneficial effects of the utility model are that:

because the sealing plug for sealing the core roll, the fixed baffle plate arranged on the sealing plug and the side wall of the shell are provided with the strip-shaped anti-explosion groove which is sunken inwards, and the shell is connected with the anti-explosion valve positioned in the strip-shaped anti-explosion groove, the anti-explosion valve not only has compact structural design and good product reliability, but also can improve the deformation of the shell of the super capacitor and delay the opening time of the anti-explosion valve of the product when gas is continuously generated in the using process by matching the strip-shaped anti-explosion groove and the anti-explosion valve, thereby prolonging the service life of the super capacitor and effectively improving the durability of the super capacitor; in addition, a safety cavity is arranged between the fixed baffle and the end cover, when large pressure gas is generated in the shell, the gas can enter the whole cavity through the air leakage hole, the foil strips are propped off, the phenomenon of product short circuit is caused, the large-area line paralysis caused by electrolyte leakage is prevented, and the circuit is protected.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a third embodiment of the present invention;

in the figure: 1. a housing; 2. an end cap; 3. core winding; 4. a sealing plug; 5. a central fixing column; 6. fixing a baffle plate; 7. leading foil strips for the positive and negative electrodes; 8. a tab; 9. an annular explosion-proof recess; 10. a strip-shaped explosion-proof groove; 11. an explosion-proof valve; 12. a locking device; 13. a safety chamber; 14. a heat sink.

Detailed Description

The explosion-proof supercapacitor of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description thereof.

The first embodiment is as follows:

as shown in fig. 1, the explosion-proof supercapacitor of the present embodiment includes a housing 1 with an upward opening, an end cap 2, a core roll 3 installed in the housing 1, a sealing plug 4 for sealing the core roll, and a fixing baffle 6, wherein the core roll 3 is composed of a positive plate, a diaphragm, and a negative plate, and is sequentially wound on a central fixing column 5 inside the housing; a hole is formed in the sealing plug 4, the upper end of the central fixing column 5 penetrates through the sealing plug 4 to be fixedly connected with the fixed baffle 6, and the lower end of the central fixing column 5 is fixedly connected with the bottom center of the shell 1; the top of the core roll 3 is provided with a positive and negative foil guiding strip 7 fixedly connected with the positive plate and the negative plate; the sealing plug 4 and the fixed baffle 6 are provided with through holes through which the positive and negative foil leading strips 7 penetrate; electrolyte is injected into the shell 1; the end cover 2 is arranged at the upper part of the shell 1, two tabs 8 are arranged on the end cover 2, and the two tabs 8 are respectively welded with the positive electrode foil guiding strip and the negative electrode foil guiding strip; the lower part of the side wall of the shell 1 is provided with inward-sunken strip-shaped explosion-proof grooves 10 along the axial direction of the shell, in the embodiment, the number of the strip-shaped explosion-proof grooves 10 is two, the two strip-shaped explosion-proof grooves are symmetrically distributed on the side wall of the shell 1, and the shell 1 is connected with an explosion-proof valve 11 positioned in the strip-shaped explosion-proof grooves 10, so that the appearance deformation of the super capacitor caused by heating and gas production is improved, and the explosion-proof pressure of a product is improved; a safety cavity 13 is designed between the fixed baffle 6 on the upper part of the shell 1 and the end cover 2, the positive and negative foil leading strips 7 penetrate through the safety cavity 13 and are welded with the lower ends of two tabs 8 of the end cover 2, and air leakage holes are designed on the fixed baffle 6 and the sealing plug 4, so that when larger pressure gas is generated in the shell, the gas can enter the safety cavity 13 through the air leakage holes; the safe chamber 13 outside of casing 1 has inside sunken explosion-proof sunken 9 of annular along the radial design of casing, foil strip 7 is drawn including a crooked foil strip and a taut foil strip that draws to positive negative pole, when the increase of the volume of safe chamber 13, taut foil strip that draws is torn apart, the degree of depth of rectangular shape explosion-proof groove 10 is 1/2 of casing 1 thickness, the sunken degree of depth of annular explosion-proof sunken 9 is 1/8 of casing 1 external diameter, the casing material is aluminium or aluminum alloy material, end cover 2, fixed stop 6's material is phenol-formaldehyde resin or engineering plastics, utmost point ear 8 is the aluminium post of surface tin-plating.

Example two:

as shown in fig. 2, the explosion-proof supercapacitor of the present embodiment includes a housing 1 with an upward opening, an end cap 2, a core roll 3 installed in the housing 1, a sealing plug 4 for sealing the core roll, and a fixing baffle 6, wherein the core roll 3 is composed of a positive plate, a diaphragm, and a negative plate, and is sequentially wound on a central fixing column 5 inside the housing; a foil leading strip 7 fixedly connected with the positive plate and the negative plate is arranged at the top of the core roll 3; electrolyte is injected into the shell 1; holes through which the positive and negative foil leading strips 7 penetrate are arranged on the sealing plug 4 and the fixed baffle 6; the end cover 2 is arranged at the upper part of the shell 1, and two tabs 8 are arranged on the end cover 2 and are respectively welded with the positive electrode foil guiding strip and the negative electrode foil guiding strip; the lower part of the side wall of the shell 1 is provided with an inwards-concave strip-shaped explosion-proof groove 10 along the axial direction of the shell.

The difference with embodiment 1 is that the upper end of the central fixing column 5 passes through the sealing plug 4 to be fixedly connected with the fixed baffle 6, the lower end passes through the shell 1 to be connected with the locking device 12, and the structure and the function of other parts are the same as those of embodiment one.

EXAMPLE III

As shown in fig. 3, the explosion-proof supercapacitor of the present embodiment includes a housing 1 with an upward opening, an end cap 2, a core roll 3 installed in the housing 1, a sealing plug 4 for sealing the core roll, and a fixing baffle 6, wherein the core roll 3 is composed of a positive plate, a diaphragm, and a negative plate, and is sequentially wound on a central fixing column 5 inside the housing; the upper end of the central fixing column 5 penetrates through the sealing plug 4 to be fixedly connected with the fixed baffle 6, and the lower end penetrates through the shell 1 to be connected with the locking device 12; a foil leading strip 7 fixedly connected with the positive plate and the negative plate is arranged at the top of the core roll 3; electrolyte is injected into the shell 1; holes through which the positive and negative foil leading strips 7 penetrate are arranged on the sealing plug 4 and the fixed baffle 6; the end cover 2 is arranged at the upper part of the shell 1, and two tabs 8 are arranged on the end cover 2 and are respectively welded with the positive electrode foil guiding strip and the negative electrode foil guiding strip; the lower part of the side wall of the shell 1 is provided with an inwards-concave strip-shaped explosion-proof groove 10 along the axial direction of the shell.

The difference from the embodiment 2 is that a heat sink 14 is further mounted on the central fixing column 5 outside the bottom of the housing 1, the heat sink 14 is annular and has a plurality of radiating fins, a through hole is formed in the center of the heat sink 14 and can be mounted on the central fixing column 5, the outer end of the heat sink is fastened by a locking device 12, the locking device 12 can be a nut, and the structure and function of other components are the same as those of the second embodiment.

Claims

1. The utility model provides an explosion-proof type ultracapacitor system, includes casing (1), installs core in casing (1) is rolled up (3) and is set up end cover (2) on casing (1) upper portion, its characterized in that: a sealing plug (4) for sealing the core roll and a fixing baffle (6) arranged on the sealing plug (4) are arranged in the shell (1), and the core roll (3) is wound on a central fixing column (5) in the shell; the top of the core roll (3) is provided with a positive electrode foil guiding strip and a negative electrode foil guiding strip; electrolyte is injected into the shell (1); the end cover (2) is provided with two tabs (8) which are respectively welded with the anode foil guiding strip and the cathode foil guiding strip; the side wall of the shell (1) is provided with an inwards-sunken strip-shaped explosion-proof groove (10).

2. An explosion-proof type supercapacitor according to claim 1, wherein: a hole is formed in the sealing plug (4); the upper end of the central fixing column (5) penetrates through the sealing plug (4) through a hole to be fixedly connected with the fixed baffle (6), and the lower end of the central fixing column (5) is fixedly connected with the bottom center of the shell (1).

3. An explosion-proof type supercapacitor according to claim 1 or 2, wherein: the shell (1) is connected with an explosion-proof valve (11) positioned in the strip-shaped explosion-proof groove (10).

4. An explosion-proof type supercapacitor according to claim 3, wherein: be provided with safe chamber (13) between fixed stop (6) and end cover (2), anodal foil leading strip and negative pole foil leading strip pass through the lower extreme welding of two utmost point ears (8) of safe chamber (13) and end cover (2), fixed stop (6) with be provided with the hole of losing heart on sealing plug (4).

5. An explosion-proof type supercapacitor according to claim 4, wherein: an annular explosion-proof recess (9) positioned on the outer side of the safety cavity (13) is arranged on the shell (1).

6. Explosion-proof supercapacitor according to claim 1, 2, 4 or 5, characterized in that: the positive electrode foil guiding strip and the negative electrode foil guiding strip are a bent foil guiding strip and a tensioned foil guiding strip.

7. An explosion-proof type supercapacitor according to claim 5, wherein: the depth of the strip-shaped explosion-proof groove (10) is 1/2-1/3 of the thickness of the shell (1), and the depth of the annular explosion-proof recess (9) is 1/6-1/8 of the outer diameter of the shell (1).

8. An explosion-proof type supercapacitor according to claim 1, 2, 4, 5 or 7, wherein: and a radiator (14) is also arranged on the central fixing column (5) on the outer side of the bottom of the shell (1).

9. An explosion-proof type supercapacitor according to claim 8, wherein: the shell (1) is made of aluminum or aluminum alloy materials, and the end cover (2) is made of phenolic resin or engineering plastics.

10. An explosion proof type supercapacitor according to claim 9, wherein: the tab (8) is an aluminum column with tin plated on the surface.