CN209747349U

CN209747349U - Battery capacitor sealing end cover die with vent hole

Info

Publication number: CN209747349U
Application number: CN201920905247.6U
Authority: CN
Inventors: 张肖康; 程秀云; 赵剑
Original assignee: Hefei Kangte Micro Technology Co Ltd
Current assignee: Hefei Kangte Micro Technology Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2019-12-06
Anticipated expiration: 2029-06-13

Abstract

The utility model discloses a take battery electric capacity end cap mould of air vent, end cap include base plate and electrode, through the body assembly between base plate and the electrode, the mould comprises lower plate mould and upper cover plate module, sets up the work piece that is the matrix arrangement on the faying face between lower plate mould and the upper cover plate mould and places the district, and the shape that the district was placed to the work piece is the same with the shape after base plate, electrode and the body assembly, and every work piece places the upper and lower both ends in district and all is equipped with the air vent. The workpiece placing area formed by hollowing the middle lower plate die and the upper cover plate die is the same as the shape of the sealing end cover, so that the workpieces cannot shake in the sintering and transporting process, the dimensional qualification rate of the sealing end cover after molding is ensured, and the performances of pull-off resistance, sealing performance and the like of the sealing end cover are improved; in addition, the positions of the lower plate die and the upper cover plate die, which correspond to the fixed workpiece, are additionally provided with vent holes, so that the ventilation and exhaust effects are achieved, the sintering process is facilitated, and the die closing and stripping operations are facilitated.

Description

Battery capacitor sealing end cover die with vent hole

Technical Field

The utility model relates to a battery or electric capacity production technical field, concretely relates to take battery electric capacity end cover mould of air vent.

Background

At present, in the technical field of organic electrolyte batteries and capacitors, a sealing end cover is used as a lead-out component of a battery and a capacitor electrode, and the insulation property, the strong corrosion resistance, the pull-off resistance, the sealing property and the like of a shell are ensured while the lead-out electrode is met. The battery or capacitor sealing end cover is arranged at one end of a battery or capacitor shell, as shown in fig. 1, the sealing end cover mainly comprises an electrode 100 and a substrate 200, wherein the electrode 100 is integrally formed by an extraction electrode column 101, a crimping step 102 and a welding platform 103, the substrate 200 is of a ring structure, the middle of the ring structure is used for penetrating the extraction electrode column 101, an outer boss 201 is arranged at the outer edge of the bottom of the ring structure, and an inner boss 202 is arranged at the inner edge.

During production, the electrode 100 and the substrate 200 are packaged in a riveting or high-temperature sintering mode, wherein riveting belongs to mechanical connection, and riveting is performed between the electrode 100 and the substrate 200 through plastic, so that the problem of electrolyte leakage after short-term aging easily occurs. The leakage problem can be better solved by adopting a mode of sintering at high temperature through a die, the blank body 300 is added between the leading-out electrode column 101 and the substrate 200 as a connecting and insulating point during sintering, and the blank body 300 can be a glass blank or a ceramic blank. However, the conventional die has the problem that the workpieces are easy to shake in the sintering and transporting process due to the fact that the shapes of the die cavity of the conventional die are not matched with the shapes of the workpieces such as the electrode 100, the substrate 200 and the like, so that various problems occur in the quality aspect of the formed sealing end cover; in addition, the cavity of the conventional mold cannot be ventilated and exhausted, which affects the sintering process and is not beneficial to mold closing and stripping operations.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take battery electric capacity end cover mould of air vent, it has solved the work piece that traditional end cover mold processing exists and has easily rocked and be not convenient for defects such as exhaust of taking a breath.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

The sealing end cover die comprises a base plate and an electrode, the base plate and the electrode are assembled through a blank, the die is composed of a lower plate die and an upper cover plate die, a workpiece placing area which is arranged in a matrix mode is arranged on a joint surface between the lower plate die and the upper cover plate die, the shape of the workpiece placing area is the same as that of the assembled base plate, the electrode and the blank, air holes are formed in the upper end and the lower end of each workpiece placing area, the air holes penetrate through the lower plate die or the upper cover plate die, and the workpiece placing areas are communicated with the outside from the upper direction and the lower direction.

The further improvement is that the lower plate die and the upper cover plate die are graphite plate dies.

the improved structure of the combined type plate mould is characterized in that a circle of ladder grooves are formed in the edge of the upper surface of the lower plate mould, a circle of raised strips are arranged on the edge of the lower surface of the upper cover plate mould, and the raised strips are just embedded into the ladder grooves when the lower plate mould and the upper cover plate mould are combined.

The further improvement lies in that the work piece placing area comprises a main cavity, an upper auxiliary cavity arranged at the middle position above the main cavity, a lower first auxiliary cavity arranged at the middle position below the main cavity, a lower second auxiliary cavity arranged at the middle position below the lower first auxiliary cavity, and a lower third auxiliary cavity arranged at the edge position below the main cavity.

The further improvement lies in that main cavity and upper auxiliary cavity are located the upper cover plate mould, first auxiliary cavity, second auxiliary cavity and third auxiliary cavity are located lower intramode.

The further improvement lies in that the main cavity, the upper auxiliary cavity, the lower first auxiliary cavity and the lower second auxiliary cavity are cylindrical structures with different radiuses and heights which are coaxially arranged, and the lower third auxiliary cavity is of a cylindrical ring structure.

The beneficial effects of the utility model reside in that: the workpiece placing area formed by hollowing the lower plate die and the upper cover plate die is the same as the shape of the sealing end cover, so that the workpieces cannot shake in the sintering and transporting process, the dimensional qualification rate of the formed sealing end cover is ensured, and the performances of pull-off resistance, sealing performance and the like of the sealing end cover are improved; in addition, the positions of the lower plate die and the upper cover plate die, which correspond to the fixed workpiece, are additionally provided with vent holes, so that the ventilation and exhaust effects are achieved, the sintering process is facilitated, and the die closing and stripping operations are facilitated.

Drawings

FIG. 1 is a schematic structural view of a sealed end cap for a battery or capacitor;

Fig. 2 and 3 are exploded views of the present invention at different angles;

FIG. 4 is a cross-sectional view of the lower and middle plate molds and the upper cover plate mold of the present invention after being assembled;

FIG. 5 is an enlarged view of portion A of FIG. 4;

In the figure: 100. an electrode; 101. leading out an electrode column; 102. crimping the step; 103. welding a platform; 200. a substrate; 201. an outer boss; 202. an inner boss; 300. a green body;

1. A lower plate mold; 2. an upper cover plate mold; 3. a workpiece placement area; 31. a main chamber; 32. an upper auxiliary cavity; 33. a lower first auxiliary cavity; 34. a lower second auxiliary cavity; 35. a lower third auxiliary cavity; 4. a vent hole; 5. a ladder groove; 6. and (4) raised strips.

Detailed Description

the present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

A battery capacitor sealing end cover mould with a vent hole is shown in figure 1, and the sealing end cover comprises a substrate 200 and an electrode 100, wherein the substrate 200 and the electrode 100 are assembled through a blank 300.

It is shown to combine fig. 2 to fig. 5 again, the utility model provides a mould comprises lower board mould 1 and upper cover plate mould 2, offer the work piece that is the matrix arrangement on the faying face between lower board mould 1 and the upper cover plate mould 2 and place district 3, the shape that district 3 was placed to the work piece is the same with the base plate, the shape after electrode and the body assembly (specific assembly structure introduces with reference to fig. 1 and background art), make the work piece can not appear rocking in the sintering transportation, the size qualification rate of shaping back end cover has been guaranteed, promote its and prevent drawing off nature, performances such as leakproofness. And, every work piece is placed the upper and lower both ends of district 3 and is all equipped with air vent 4, and air vent 4 runs through in lower plate mould 1 or upper cover plate mould 2, and it places district 3 with the external intercommunication simultaneously from upper and lower two directions with the work piece, plays the exhaust effect of taking a breath, and it helps going on of sintering process, and is convenient for compound die, drawing die operation.

As an embodiment structure of the utility model, above-mentioned lower plate mould 1 and upper cover plate mould 2 are graphite plate mould, and its melting point reaches 3652 ℃, have excellent high temperature resistance, heat conductivity, thermal shock resistance, chemical stability etc..

As the embodiment of the utility model discloses an embodiment structure, the upper surface edge of above-mentioned lower plate mould 1 is equipped with the terraced groove of round 5, and the lower surface edge of upper cover plate mould 2 is equipped with round sand grip 6, and when lower plate mould 1 and the 2 compound dies of upper cover plate mould, sand grip 6 imbeds terraced inslot 5 just. The cooperation of the ladder grooves 5 and the convex strips 6 is beneficial to the mold closing operation of the lower plate mold 1 and the upper cover plate mold 2, and the automatic positioning between the lower plate mold and the upper cover plate mold is realized, so that the production efficiency and the quality of a sintered finished product are improved.

As an embodiment structure of the present invention, the workpiece placing area 3 includes a main cavity 31, an upper auxiliary cavity 32 disposed at a middle position above the main cavity 31, a lower first auxiliary cavity 33 disposed at a middle position below the main cavity 31, a lower second auxiliary cavity 34 disposed at a middle position below the lower first auxiliary cavity 33, and a lower third auxiliary cavity 35 disposed at a peripheral position below the main cavity 31.

As an embodiment structure of the present invention, the main cavity 31 and the upper auxiliary cavity 32 are located in the upper cover plate mold 2, and the lower first auxiliary cavity 33, the lower second auxiliary cavity 34 and the lower third auxiliary cavity 35 are located in the lower cover plate mold 1.

As an embodiment of the present invention, the main cavity 31, the upper auxiliary cavity 32, the lower first auxiliary cavity 33 and the lower second auxiliary cavity 34 are cylindrical structures with different radiuses and heights arranged coaxially, and the lower third auxiliary cavity 35 is a cylindrical ring structure. The radius and the height of the main cavity 31 are matched with the size of a substrate, the radius and the height of the upper auxiliary cavity 32 are matched with the overall size of the crimping step 102 and the welding platform 103, the radius and the height of the lower first auxiliary cavity 33 are matched with the size of the inner boss 202, the radius of the lower second auxiliary cavity 34 is matched with the size of the extraction electrode column 101, and the total height of the upper auxiliary cavity 32, the main cavity 31, the lower first auxiliary cavity 33 and the lower second auxiliary cavity 34 is matched with the height of the electrode 100; the lower third auxiliary cavity 35 is sized to mate with the outer boss 201.

The utility model discloses the concrete use step of mould introduced: firstly assembling a workpiece, placing a blank body 300 in a sealed end cover at the middle position of a ring sheet of a substrate 200, inserting an electrode 100 into the middle of the blank body 300, leading an electrode column 101 to penetrate through the blank body 300, and abutting a pressure welding step 102 on the blank body 300 to finish the assembly. Then, the assembled workpieces are integrally placed in the workpiece placing areas 3 of the lower plate die 1, and the upper cover plate die 2 is covered on the lower plate die 1, so that the convex strips 6 are just embedded into the ladder grooves 5. After the die assembly is carried out, the substrate 200 of the sealing end cover is located at the edge position of the main cavity 31, the outer boss 201 is embedded into the lower third auxiliary cavity 35, the inner boss 202 and the lower end part structure of the blank 300 are embedded into the edge position of the lower first auxiliary cavity 33, the upper end part structure of the blank 300 is located in the main cavity 31, the crimping step 102 and the welding platform 103 are just located in the upper auxiliary cavity 32, and the extraction electrode column 101 is just embedded into the lower second auxiliary cavity 34 after sequentially penetrating through the middle positions of the main cavity 31 and the lower first auxiliary cavity 33. And finally, sintering at high temperature to complete the sealing function of the electrode 100 and the substrate 200 by the blank 300.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a take battery capacitance end cover mould of air vent, end cover includes base plate and electrode, assemble its characterized in that through the body between base plate and the electrode: the die is composed of a lower plate die (1) and an upper cover plate die (2), a workpiece placing area (3) which is arranged in a matrix mode is formed in a combining surface between the lower plate die (1) and the upper cover plate die (2), the shape of the workpiece placing area (3) is the same as that of a base plate, an electrode and a blank after assembly, vent holes (4) are formed in the upper end and the lower end of each workpiece placing area (3), the vent holes (4) penetrate through the lower plate die (1) or the upper cover plate die (2), and the workpiece placing areas (3) are communicated with the outside from the upper direction and the lower direction.

2. the battery capacitor end sealing cover mold with the vent hole as claimed in claim 1, wherein: the lower plate die (1) and the upper cover plate die (2) are graphite plate dies.

3. The battery capacitor end sealing cover mold with the vent hole as claimed in claim 1, wherein: the upper surface edge of lower plate mould (1) is equipped with round ladder groove (5), the lower surface edge of upper cover plate mould (2) is equipped with round sand grip (6), and when lower plate mould (1) and upper cover plate mould (2) compound die, sand grip (6) imbed in ladder groove (5) just.

4. The battery capacitor end sealing cover mold with the vent hole as claimed in claim 1, wherein: the workpiece placing area (3) comprises a main cavity body (31), an upper auxiliary cavity body (32) arranged at the middle position above the main cavity body (31), a lower first auxiliary cavity body (33) arranged at the middle position below the main cavity body (31), a lower second auxiliary cavity body (34) arranged at the middle position below the first auxiliary cavity body (33) and a lower third auxiliary cavity body (35) arranged at the edge position below the main cavity body (31).

5. The battery capacitor end sealing cover mold with the vent hole as claimed in claim 4, wherein: the main cavity (31) and the upper auxiliary cavity (32) are located in the upper cover plate die (2), and the lower first auxiliary cavity (33), the lower second auxiliary cavity (34) and the lower third auxiliary cavity (35) are located in the lower plate die (1).

6. The battery capacitor end sealing cover mold with the vent hole as claimed in claim 4, wherein: the main cavity (31), the upper auxiliary cavity (32), the lower first auxiliary cavity (33) and the lower second auxiliary cavity (34) are cylindrical structures with different radiuses and heights which are coaxially arranged, and the lower third auxiliary cavity (35) is of a cylindrical ring structure.