CN220382149U

CN220382149U - Battery sealing die

Info

Publication number: CN220382149U
Application number: CN202321873984.5U
Authority: CN
Inventors: 黄秀力; 刘杰; 包滨宇
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2024-01-23
Anticipated expiration: 2033-07-14

Abstract

The utility model discloses a battery sealing die which comprises a first die, a table top and a gas supply assembly, wherein the first die is provided with a battery groove and a first channel, the battery groove is used for accommodating a battery to be sealed, the first channel is communicated with the battery groove, the gas supply assembly is used for supplying gas, the table top is connected with the first die and is provided with a second channel, and the second channel is communicated between the first channel and the gas supply assembly so that the gas can enter the battery groove and eject the sealed battery. The battery sealing die provided by the utility model is convenient for taking out the battery from the clamping groove, avoids the condition that the die or the battery is easy to damage when the battery is taken out in a prying mode and the like in the related art, ensures the yield of production, and reduces the manufacturing cost.

Description

Battery sealing die

Technical Field

The utility model relates to the technical field of battery processing, in particular to a battery sealing die.

Background

The button cell has the advantages of high specific power, small volume, simple manufacture and the like, and is widely applied to the fields of new energy, aerospace, scientific research, daily life and the like. Button cells generally include components such as a positive electrode case, a negative electrode case, a positive electrode sheet, a negative electrode sheet, a separator, an electrolyte, a lithium sheet, a sodium sheet, and the like, and when in processing, the positive electrode sheet, the negative electrode sheet, the separator, the electrolyte, the lithium sheet, the sodium sheet, and the like need to be sealed between the positive electrode case and the negative electrode case by applying a certain pressure by a sealing machine.

However, in the prior art, the sealing machine is usually implemented by extruding two molds, for example, in the chinese patent application publication No. CN 218513499U, a sealing machine for a button cell is disclosed, and the sealing machine includes an upper mold assembly and a lower mold assembly, and a positioning groove is formed on the lower mold assembly.

However, the processing mode makes part of the button cells easy to be clamped in the clamping grooves of the mould, when clamping stagnation occurs, the buttons are pried out of the clamping grooves by means of tools, so that the button cells and the mould are easy to be damaged in the prizing process, and the production and manufacturing cost of the button cells is increased.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the utility model provides the battery sealing die, which is convenient for taking out the battery from the clamping groove, avoids the condition that the die or the battery is easy to damage when the battery is taken out in a prying mode and the like in the related art, ensures the yield of production and also reduces the manufacturing cost.

The battery sealing die of the embodiment of the utility model comprises:

the battery box is used for placing a battery to be sealed, and the first channel is communicated with the battery box;

the table top is connected with the first die and is provided with a second channel, and the second channel is communicated between the first channel and the air supply assembly so that the air can enter the battery groove and the sealed battery can be ejected out.

The battery sealing die provided by the embodiment of the utility model is convenient for taking out the battery from the clamping groove, avoids the condition that the die or the battery is easy to damage when the battery is taken out in a prying mode and the like in the related art, ensures the yield of production and also reduces the manufacturing cost.

In some embodiments, the battery seal mold includes a pressure relief valve disposed on the table and in communication with the first channel, and the pressure relief valve is configured to open when a pressure within the first channel exceeds a set threshold.

In some embodiments, the battery closure mold comprises:

the second die is used for being pressed with the first die to seal the battery to be sealed;

the base, the mesa slidable assemble in the base is so that first mould can to the second mould removes, the air feed subassembly is located the base.

In some embodiments, the air supply assembly includes a connecting tube connected between the table top and the base, and the connecting tube is retractable such that a length of the connecting tube is adjustable to accommodate a change in the spacing of the table top and the base.

In some embodiments, the battery seal mold includes a drive assembly disposed on the base and configured to act on the table top to drive the table top and the first mold to move toward the second mold.

In some embodiments, the base comprises a plurality of support columns, the extension directions of the support columns are consistent, the table top is assembled on the support columns and can move along the extension directions of the support columns, and the second die is arranged on the support columns and is positioned above the first die.

In some embodiments, the plurality of support columns are divided into a first column group and a second column group, each of the first column group and the second column group including at least one of the support columns, the mesa is provided with a first slot and a second slot, each of the support columns of the first column group passes through the first slot, and each of the support columns of the second column group passes through the second slot.

In some embodiments, the first mold and the second mold are provided with a plurality of first channels, the first channels of the first molds are communicated with the second channels, and the first molds are matched with the second molds in a one-to-one correspondence mode.

In some embodiments, the first mold comprises an inner frame and an outer frame, the outer frame is annular and fixed on the outer peripheral side of the inner frame, the inner frame and/or the outer frame are detachably connected with the table top, the first channel is arranged on the inner frame, and the battery groove is arranged on the outer frame.

In some embodiments, the through-flow cross-section of the first channel is greater than the through-flow cross-section of the second channel.

Drawings

Fig. 1 is a schematic view showing the overall structure of a battery sealing mold according to an embodiment of the present utility model.

Fig. 2 is a schematic view of the assembly of the table and the first mold of fig. 1.

Fig. 3 is a schematic top view of fig. 2.

Fig. 4 is a schematic view of the arrangement of the second channel of the mesa of another embodiment of the utility model.

Fig. 5 is a schematic top view of the table top of fig. 4.

Fig. 6 is a schematic view of a table top configured with a plurality of first molds according to an embodiment of the utility model.

Fig. 7 is a schematic top view of fig. 6.

Reference numerals:

a first mold 1; an inner frame 11; an annular portion 111; an outer frame 12; a battery case 13; a first channel 14;

a table top 2; a second channel 21; a fixing pile 22; a first groove 23; a second groove 24;

a gas supply assembly 3; a connection pipe 31; a barometer 32;

a pressure relief valve 4;

a second mold 5;

a base 6; support posts 61; a first column set 611; a second column group 612;

a drive assembly 7;

and a fixing member 8.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1, the battery sealing mold of the embodiment of the present utility model includes a first mold 1, a table top 2, and a gas supply assembly 3.

The first mould 1 is provided with a battery groove 13 and a first channel 14, the battery groove 13 is used for placing a battery to be sealed, and the first channel 14 is communicated with the battery groove 13. For example, as shown in fig. 1 to 3, the first mold 1 may be generally cylindrical, the battery jar 13 may be provided at the top of the first mold 1, the battery jar 13 may be generally a circular jar, and the notch of the battery jar 13 may be disposed upward. The first passage 14 may be provided in the first mold 1, for example, the first passage 14 may be provided at a central position of the first mold 1 and may be arranged to extend along an axis of the first mold 1, and a tip end of the first passage 14 may be in communication with the battery groove 13.

The gas supply assembly 3 may include a gas source or the like, the gas supply assembly 3 may be installed under the first mold 1, and the gas supply assembly 3 may supply gas to the first passage 14 of the first mold 1 and the battery compartment 13.

The table 2 is connected to the first mould and is provided with a second channel 21, the second channel 21 being in communication between the first channel 14 and the gas supply assembly 3 so that gas can enter the battery compartment 13 and eject the sealed battery.

For example, the table top 2 may be substantially rectangular plate-shaped, and the first mold 1 may be mounted on the upper side of the table top 2 in a manner of fastening, pin shaft limitation, or the like. As shown in fig. 1 to 3, a second channel 21 may be provided in the table top 2, the second channel 21 may extend generally in a left-right direction, a left end of the second channel 21 may be connected to the air supply assembly 3, and a right end of the second channel 21 may be connected to a bottom of the first channel 14.

When the battery box is used, a button battery and the like to be sealed can be placed in the battery box 13, sealing of the button battery can be achieved through pressing of the die, after sealing is finished, high-pressure gas can be supplied to the battery box 13 through the gas supply assembly 3, and the high-pressure gas can be conveyed into the battery box 13 through the first channel 14 and the second channel 21, so that the battery in the battery box 13 can be blown out of the battery box 13 from the notch of the battery box 13.

In some embodiments, the battery closure mold includes a pressure relief valve 4, the pressure relief valve 4 being disposed on the table 2 and in communication with the first channel 14, and the pressure relief valve 4 being configured to open when the pressure within the first channel 14 exceeds a set threshold.

For example, as shown in fig. 1 to 4, the pressure relief valve 4 may be installed at the top side of the table 2, and the left end of the first passage 14 may be provided with an outlet at the upper surface of the table 2, at which the pressure relief valve 4 may be installed. When the air pressure in the first channel 14 and the second channel 21 is large, the pressure relief valve 4 can be automatically opened, so that the effect of timely relieving pressure and exhausting air is achieved, the situation that the air pressure in the channels is high (exceeds a set threshold value) and damage is easy to cause and the tightness is reduced is avoided, and the protection effect is achieved.

In some embodiments, the battery sealing mold comprises a second mold 5 and a base 6, the second mold 5 is used for pressing with the first mold 1 to seal the battery to be sealed, the table top 2 is slidably assembled on the base 6 so that the first mold can move towards the second mold 5, and the air supply assembly 3 is arranged on the base 6.

For example, as shown in fig. 1, the second mold 5 may be installed above the first mold 1, the second mold 5 may include a punch, and in use, the first mold may move upward, and the punch of the second mold 5 may be fitted in the battery slot 13, so that sealing of the button battery may be achieved by pressing. In other embodiments, the second module may also be moved downward, so that sealing of the battery may also be achieved.

The base 6 can be provided with sliding structures such as sliding grooves and sliding rails, and the table top 2 can be assembled on the sliding structures and can move up and down along the sliding structures. Thereby, the first mold 1 is driven, and the driving method is simplified. The air supply assembly 3 can be mounted on the base 6, facilitating the mounting arrangement of the air supply assembly 3.

In some embodiments, the air supply assembly 3 includes a connecting tube 31, the connecting tube 31 being connected between the table top 2 and the base 6, and the connecting tube 31 being retractable so that the length of the connecting tube 31 is adjustable to accommodate changes in the spacing of the table top 2 and the base 6.

For example, as shown in fig. 1 and 2, the connection pipe 31 may be a steel spring pipe, and in other embodiments, the connection pipe 31 may be a bellows pipe or the like that is telescopic. The left end of the second channel 21 may be provided with a downward opening, the connection pipe 31 is installed below the table top 2, and the top end of the connection pipe 31 may communicate with the lower opening of the left end of the second channel 21, and the bottom end of the connection pipe 31 may communicate with the air source of the air supply assembly 3.

Because the mesa 2 and the first mould 1 can upwards move in the sealing process, at this time, the distance between the mesa 2 and the base 6 can be changed, and the telescopic arrangement of the connecting pipe 31 can adapt to the change, thereby meeting the use requirement of the mesa 2 moving relative to the base 6.

In some embodiments, the battery closure die comprises a drive assembly 7, the drive assembly 7 being provided to the base 6, and the drive assembly 7 being configured to act on the table top 2 to urge the table top 2 and the first die 1 towards the second die 5.

The drive assembly 7 may be pneumatically driven, for example, the base 6 may be provided with a sealing cylinder, the top of which may be open, and a piston which may be sealingly fitted within the sealing cylinder and may protrude from the opening of the top. The base 6 may also be provided with a driving air source, which may be a separate air source dedicated to driving the piston to move, and in other embodiments, the driving air source may also be an air source of the air supply assembly 3, so as to simplify the structure and reduce the cost.

When the button cell sealing device is used, the driving air source can convey high-pressure air into the sealing air cylinder, the high-pressure air can push the piston upwards, then the upward movement driving of the table top 2 can be realized by the piston, and further the upward movement driving of the first die 1 can be realized, so that the button cell sealing device is convenient for sealing button cells.

In some embodiments, the base 6 includes a plurality of support columns 61, the plurality of support columns 61 have identical extending directions, the table top 2 is assembled to the plurality of support columns 61 and is movable along the extending directions of the support columns 61, and the second mold 5 is disposed on the support columns 61 and above the first mold 1.

For example, as shown in fig. 1 to 3, the support columns 61 may be provided with four, each of the four support columns 61 may be of a cylindrical type or a prismatic type and may be fixed at four corner positions of the base 6, respectively, and each of the support columns 61 extends in the up-down direction.

The mesa 2 may be provided with through holes, the number of which may be the same as the number of the support columns 61, and the aperture of which may be slightly larger than the radial dimension of the support columns 61. The plurality of support columns 61 can play a role in limiting the circumference of the table top 2, and ensure the guiding performance of the movement of the table top 2.

The support columns 61 may be integrally formed and fixed on the upper side of the base 6, the top ends of the plurality of support columns 61 may be fixed with a mounting plate, the mounting plate may be simultaneously connected and fixed with the plurality of support columns 61, and the second mold 5 may be mounted on the mounting plate.

In some embodiments, the plurality of support columns 61 are divided into a first column group 611 and a second column group 612, the first column group 611 and the second column group 612 each include at least one support column 61, the mesa 2 is provided with a first slot 23 and a second slot 24, the support columns 61 of the first column group 611 each pass through the first slot 23, and the support columns 61 of the second column group 612 each pass through the second slot 24.

For example, as shown in fig. 3, 5 and 7, the first groove 23 may be provided on the left side of the table top 2, the second groove 24 may be provided on the right side of the table top 2, the first groove 23 and the second groove 24 may each extend in the front-rear direction and penetrate the front side surface of the table top 2, and the first groove 23 and the second groove 24 may each penetrate the table top 2 in the thickness direction (up-down direction) of the table top 2.

The first column group 611 and the second column group 612 may each include a plurality of support columns 61, for example, the first column group 611 may include two support columns 61 spaced apart in the front-rear direction, and the second column group 612 may also include two support columns 61 spaced apart in the front-rear direction. When the table 2 is installed, both support columns 61 of the first column group 611 may be passed through the first slot 23, and both support columns 61 of the second column group 612 may be passed through the second slot 24. Then, a fixing piece 8 may be mounted on the table top 2, the fixing piece 8 may be a pin, each of the first slot 23 and the second slot 24 may be mounted with one fixing piece 8, the fixing pieces 8 extend along the left-right direction, and each fixing piece 8 is close to the front notch of the first slot 23 or the second slot 24.

When the table top 2 is mounted, the table top 2 may be horizontally placed, wherein the first column group 611 may be located at the front side of the first slot 23, the second column group 612 may be the front side of the second slot 24, and then the first column group 611 may be assembled into the first slot 23 and the second column group 612 may be assembled into the second slot 24 by pushing the table top 2 forward, thereby facilitating the assembly of the table top 2.

The fixing piece 8 at the first groove 23 may be stopped with the support column 61 at the front side of the first column group 611, and the fixing piece 8 at the second groove 24 may be stopped with the support column 61 at the front side of the second column group 612. The restriction of the table top 2 in the front-rear direction can be realized by the stop limit of the fixing piece 8 and the corresponding support column 61, thereby ensuring the structural stability of the table top 2 in use.

In some embodiments, the first mold 1 and the second mold 5 are provided with a plurality of first molds, the first channels 14 of the plurality of first molds 1 are communicated with the second channels 21, and the plurality of first molds 1 are matched with the plurality of second molds 5 in a one-to-one correspondence.

For example, as shown in fig. 4 to 5, the top side of the table top 2 may be provided with a plurality of outlets, which may be arranged at intervals in the left-right direction. The first mould 1 and the second mould 5 are built up in one piece and the number of first mould 1 and second mould 5 is the same as the number of outlets of the second channel 21 on the top side of the table 2. As shown in fig. 6 and 7, a plurality of first molds 1 may be installed at a plurality of outlets of the second passage 21 in one-to-one correspondence, and a plurality of second molds 5 may be fitted over the plurality of first molds 1 in one-to-one correspondence.

When the sealing device is used, sealing of a plurality of button cells can be achieved through the first dies 1 and the second dies 5, so that sealing efficiency can be improved, and batch consistency can be guaranteed. After the sealing is finished, the battery grooves 13 of the plurality of first molds 1 are communicated with the second channel 21, so that the batteries in the battery grooves 13 of the plurality of first molds 1 can be blown out simultaneously by the air supply assembly 3, and the demolding of the plurality of sealed batteries is facilitated.

In some embodiments, the first mold 1 includes an inner frame 11 and an outer frame 12, the outer frame 12 is ring-shaped and fixed to an outer circumferential side of the inner frame 11, the inner frame 11 and/or the outer frame 12 are detachably connected to the table 2, the first channel 14 is provided in the inner frame 11, and the battery jar 13 is provided in the outer frame 12.

For example, as shown in fig. 1 and 2, the inner frame 11 and the outer frame 12 may each be generally cylindrical, and the bottom of the inner frame 11 may be provided with an annular portion 111, and the radial dimension of the annular portion 111 is greater than the radial dimension of the rest of the inner frame 11. The table top 2 can be provided with a plurality of fixing piles 22 in an integrated manner, the fixing piles 22 are protruded from the upper surface of the table top 2, two through holes can be formed in the annular portion 111, and when the table top is installed, the two corresponding fixing piles 22 can be inserted into the two through holes of the annular portion 111, and the inner frame 11 can be installed and fixed by limiting the fixing piles 22 and the hole walls of the through holes.

The outer frame 12 can be sleeved on the outer periphery side of the inner frame 11, the outer thread can be arranged on the bottom periphery side of the inner frame 11, the inner thread can be arranged on the bottom inner side of the outer frame 12, and the outer frame 12 and the inner frame 11 can be fixedly installed in a threaded fit mode during installation. The inner hole of the inner frame 11 may form a first passage 14, and the battery slot 13 may be provided at the top of the outer frame 12.

When it is necessary to seal batteries of different types and specifications, the outer frame 12 may be replaced differently, and in other embodiments, the inner frame 11 and the outer frame 12 may be integrally provided, and at this time, the first mold 1 may be replaced integrally to match different battery sizes.

In some embodiments, the through-flow cross-section of the first channel 14 is greater than the through-flow cross-section of the second channel 21. Specifically, the cross sections of the first channel 14 and the second channel 21 may be circular, wherein the cross section of the first channel 14 may be larger than the cross section of the second channel 21, so that the impact of the gas at the first channel 14 may be properly slowed down, thereby ensuring the stability of the gas pressure acting on the battery, and enhancing the acting area acting on the battery, thereby reducing the acting local pressure.

In some embodiments, as shown in fig. 1, the air supply assembly may further include an air pressure gauge 32, and the air pressure gauge 32 may be located between the connection pipe 31 and the air source, so that the air pressure gauge 32 can intuitively know the supplied air pressure.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims

1. A battery closure die, comprising:

2. The battery closure mold of claim 1 including a pressure relief valve provided on said table and in communication with said first passage, said pressure relief valve for opening when the pressure in said first passage exceeds a set threshold.

3. The battery closure mold of claim 1, comprising:

4. The battery closure mold of claim 3 wherein said air supply assembly comprises a connecting tube connected between said table top and said base, and said connecting tube is telescoping such that the length of said connecting tube is adjustable to accommodate variations in the spacing of said table top and said base.

5. A battery closure die as in claim 3 including a drive assembly disposed on said base and adapted to act on said table top to urge said table top and said first die toward said second die.

6. A battery sealing die as in claim 3 wherein said base comprises a plurality of support columns, said support columns having a uniform direction of extension, said mesa being mounted to and movable along said direction of extension of said support columns, said second die being disposed above said first die on said support columns.

7. The battery closure die of claim 6 wherein a plurality of said support posts are divided into a first post set and a second post set, said first post set and said second post set each including at least one said support post, said mesa having a first slot and a second slot, said support posts of said first post set each passing through said first slot, said support posts of said second post set each passing through said second slot.

8. The battery sealing mold of claim 3, wherein a plurality of first molds and a plurality of second molds are provided, the first channels of the plurality of first molds are communicated with the second channels, and the plurality of first molds are matched with the plurality of second molds in a one-to-one correspondence.

9. The battery sealing mold according to claim 1, wherein the first mold comprises an inner frame and an outer frame, the outer frame is annular and fixed on the outer peripheral side of the inner frame, the inner frame and/or the outer frame are detachably connected with the table top, the first channel is arranged on the inner frame, and the battery groove is arranged on the outer frame.

10. The battery closure die of any one of claims 1-9 wherein the through-flow cross-section of the first channel is greater than the through-flow cross-section of the second channel.