CN212944900U

CN212944900U - Electricity core dashes shell mould and electricity core towards shell equipment

Info

Publication number: CN212944900U
Application number: CN202021099770.3U
Authority: CN
Inventors: 叶永强; 姚伟棠; 林振摄; 彭汉兴
Original assignee: Guangdong Fenghua New Energy Co ltd
Current assignee: Guangdong Fenghua New Energy Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-04-13
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to an electricity core production field, concretely relates to electricity core dashes shell mould and electricity core towards shell equipment. This electric core dashes shell mould includes the mould main part, the mould main part is equipped with the first punching hole and the second punching hole that are used for dashing electric core casing, form the mould muscle between first punching hole and the second punching hole, the side of mould muscle is predetermine high department and is provided with the strengthening rib, the highest tip of strengthening rib is greater than predetermineeing the punching degree of depth with the first distance of punching hole opening or second punching hole opening. The utility model discloses a set up the strengthening rib in the side of mould muscle, the highest tip of strengthening rib is greater than predetermineeing the punching degree of depth with first punching hole opening or the distance that the second punched the hole opening, and the strengthening rib can increase the rigidity intensity of mould muscle under the condition that does not interfere the casing punching, reduces the deformation on the width direction after the long-term use of mould muscle, prolongs the life that shell mould and electric core punched shell equipment, and reduce cost improves simultaneously and dashes the shell quality.

Description

Electricity core dashes shell mould and electricity core towards shell equipment

Technical Field

The utility model relates to an electricity core production field, concretely relates to electricity core dashes shell mould and electricity core towards shell equipment.

Background

In the production process of the battery core, the shell of the battery core is formed by punching an aluminum plastic film. When the total thickness of the battery core is larger, the shell needs to be punched into a double-pit structure, and the corresponding battery core shell punching die is provided with the double-pit structure, in particular to the battery core shell punching die of a polymer battery core.

Wherein, considering the need of polymer battery core encapsulation, the two pits of the shell are intentionally set to different depths, which are different corresponding to the punching depths of the aluminum plastic film. The deep pits in the polymer cell casing correspond to the front of the polymer cell and are of greater depth (typically within 2.0-6.5 mm), and the shallow pits correspond to the back of the polymer cell and are of lesser depth (typically within 1.0-5.0 mm). The shell punching die of the polymer battery cell is provided with a die rib between the double pits. When designing the thickness of mould muscle, need consider two restriction conditions: if the mold ribs are made too thick, the length of the double pits can be sacrificed, thereby reducing the design capacity of the polymer battery cell; if the die rib is made too thin, the corresponding aluminum plastic film is partially over-stretched, and the polymer battery cell shell after subsequent processing is easy to damage and leak liquid.

Adopt the in-process of above-mentioned electric core towards shell mould punching casing, the plastic-aluminum membrane is stretched along the mould muscle, punches and forms the casing, and the horizontal oppression strength to the mould muscle is different in the two pits, because the muscle position is lamellar, and self rigidity intensity is not enough, produces deformation easily after long-term the use, and the casing corner position after punching produces the fold easily, and electric core towards shell mould and a whole set of electric core towards shell equipment can only scrap, can only change whole set of electric core towards shell equipment, and is with high costs.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide an electricity core and dash shell mould and electricity core and dash shell equipment, solve present electricity core and dash the mould muscle among the shell mould and produce deformation easily, the problem that equipment replacement cost is high.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a shell mould is dashed to electric core, includes the mould main part, the mould main part is equipped with the first system hole and the second system hole of punching that are used for punching electric core casing, first system hole and second punching form the mould muscle between the hole, the side of mould muscle is predetermine high department and is provided with the strengthening rib, the highest tip of strengthening rib is greater than predetermineeing the system degree of depth with the first system hole opening or the second system hole opening of punching apart from.

The utility model discloses a further preferred scheme is: the reinforcing ribs are arranged along the horizontal direction of the die ribs.

The utility model discloses a further preferred scheme is: the reinforcing ribs are obliquely arranged on the die ribs.

The utility model discloses a further preferred scheme is: the die ribs and the reinforcing ribs are integrally arranged.

The utility model discloses a further preferred scheme is: the first punching pit and/or the second punching pit penetrate through two opposite end faces of the die body.

The utility model discloses a further preferred scheme is: the first punching pit and/or the second punching pit are/is a groove arranged in the die main body.

The utility model discloses a further preferred scheme is: the reinforcing ribs are of a strip structure or a strip pattern structure.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a shell equipment is dashed to electric core, includes punching press mechanism, first actuating mechanism and as above arbitrary the shell mould is dashed to electric core, punching press mechanism include with electric core dash first punching press portion that the shell mould is corresponding and with second punching press portion that the pit is corresponding, first actuating mechanism drives first punching press portion and second punching press portion and corresponds and stretch into first punching press pit and second punching press pit.

The utility model discloses a further preferred scheme is: the electric core shell punching equipment further comprises a base which is provided with a through hole and is matched with the die main body to compress the aluminum-plastic film, and the first driving mechanism drives the first punching part and the second punching part to penetrate through the through hole in the base and extend into the corresponding first punching pit and the second punching pit.

The utility model discloses a further preferred scheme is: the battery core shell punching equipment further comprises a second driving mechanism connected with the die main body, and the second driving mechanism drives the die main body to move and is matched with the base to compress the aluminum-plastic film.

The beneficial effects of the utility model reside in that, compared with the prior art, through set up the first punching hole and the second punching hole that are used for punching electric core shell in the mould main part, first punching hole and second punching hole form the mould muscle between the hole, and predetermine height department in the side of mould muscle and set up the strengthening rib, the highest tip of strengthening rib is greater than predetermineeing the punching degree of depth with the first distance of punching hole opening or second punching hole opening, the strengthening rib can increase the rigidity intensity of mould muscle under the condition that does not interfere the casing punching, reduce the deformation on the width direction after the long-term use of mould muscle, the life of extension electric core punching shell mould and electric core punching shell equipment, and the cost is reduced, improve simultaneously and punch the shell quality.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic perspective view of a cell stamping die of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a schematic perspective view of the battery cell punching device of the present invention;

fig. 4 is a schematic plan structure diagram of the electrical core shell punching device of the present invention.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides a preferred embodiment of a shell mould is dashed to electric core.

Referring to fig. 1 and 2, the battery cell punching mold comprises a mold main body 10, the mold main body 10 is provided with a first punching pit 11 and a second punching pit 12 for punching a battery cell casing, a mold rib 13 is formed between the first punching pit 11 and the second punching pit 12, a reinforcing rib 14 is arranged at a preset height on the side surface of the mold rib 13, and the distance between the highest end of the reinforcing rib 14 and the opening of the first punching pit 11 or the opening of the second punching pit 12 is greater than the preset punching depth.

Set up strengthening rib 14 on the side through the mould muscle 13 between first punching hole 11 and second punching hole 12, and the highest tip of strengthening rib 14 is greater than the predetermined punching degree of depth with first punching hole 11 or the open-ended distance in second punching hole 12, can realize punching of electric core casing, and strengthening rib 14 can increase the rigidity intensity of mould muscle 13 under the condition that does not interfere the casing punching, reduce the deformation on the width direction after mould muscle 13 uses for a long time, the life of extension electric core towards shell mould and electric core towards shell equipment, therefore, the cost is reduced, and the shell quality is dashed in the improvement simultaneously.

The side surface of the die rib 13 may be an end surface facing the first punched pit 11, or an end surface facing the second punched pit 12, or both end surfaces are provided with a reinforcing rib 14, and the distance between the highest end of the reinforcing rib 14 and the corresponding punched pit is greater than the preset punching depth of the punched pit. In the present embodiment, it is preferable that the reinforcing ribs 14 are provided on the end surface facing the second punched pit 12, and the first punched pit 11 is used to punch the casing corresponding to the front surface of the cell, and the second punched pit 12 is used to punch the casing corresponding to the back surface of the cell.

In addition, the preset punching depth is set according to the thickness of the shell corresponding to the front surface or the back surface of the battery cell, and the distance between the highest end part of the reinforcing rib 14 and the opening of the first punching pit 11 or the opening of the second punching pit 12 is larger than the preset punching depth, so that the interference between the external punching part and the reinforcing rib 14 can be prevented. The predetermined height ensures that the reinforcement rib 14 can reduce the deformation of the mold rib 13, and if the height is too low, the reinforcement rib cannot achieve the purpose.

Further, the reinforcing ribs 14 are arranged in the horizontal direction of the die rib 13. Of course, the reinforcing ribs 14 may be provided obliquely to the mold ribs 13. The reinforcing ribs 14 are provided in one of the above-described manners to enhance the rigidity of the mold rib 13. The reinforcing ribs 14 may have a long strip structure or a strip pattern structure, and the strip pattern structure is a structure that extends in the horizontal direction of the die rib 13 as a whole and has an irregular outer contour.

Further, the mold rib 13 is integrally provided with the reinforcing rib 14. When the battery core shell punching die is processed, a processing mode of combining linear cutting with milling can be adopted, the first punching pit 11 and the second punching pit 12 are cut by the linear cutting mode to form a preformed die rib 13, and then the die rib 13 is milled by a milling cutter to form a structure integrating the die rib 13 and the reinforcing rib 14. In other embodiments, the mold rib 13 and the reinforcing rib 14 may be provided separately, that is, the reinforcing rib 14 is additionally provided on the side surface of the mold rib 13.

Further, the first punched hole 11 and/or the second punched hole 12 are provided through both opposite end surfaces of the mold body 10. The first punched pit 11 and the second punched pit 12 can be processed by a processing mode of combining linear cutting with milling, penetrate through two opposite end faces of the die main body 10 and are convenient to operate. Of course, in other embodiments, the first punched hole 11 and/or the second punched hole 12 may be a slot provided in the mold main body 10, and the outer punched part extends into the first punched hole 11 and the second punched hole 12 to punch the aluminum-plastic film into the housing corresponding to the front and the back of the core.

In the actual process of manufacturing the battery cell punching shell mold, two rectangular hole sites are firstly processed on the mold main body 10 by adopting a linear cutting process, and the rectangular hole sites penetrate through two opposite end faces of the mold main body 10. A preformed mold rib 13 is formed between the two rectangular hole sites, the thickness can be set to be 6.5mm, then a milling cutter is used for thinning one part of the mold rib 13, the thinned thickness of the part of the mold rib 13 can be 1.5mm, so that the integrated structure of the mold rib 13 and the reinforcing rib 14 is processed, and the hole sites on the two sides of the mold rib 13 are the first punching hole 11 and the second punching hole 12 for punching the shell. The milling cutter milling depth can be set according to the thickness of the shell which is formed by punching as required, so that the reinforcing rib 14 cannot interfere with an external punching part, for example, one rectangular hole corresponds to the second punching pit 12, the thickness of the shell corresponding to the second punching pit 12 cannot exceed 6mm, the thickness of the die main body 10 is 40mm, the milling cutter milling depth is 7mm, and a structure integrating the die rib 13 and the reinforcing rib 14 is formed between the first punching pit 11 and the second punching pit 12 in a processing mode and is finished. Above each size of electric core towards shell mould is merely for the illustration, and does not the utility model discloses a size of electric core towards shell mould limits.

As shown in fig. 3 and 4, the present invention provides a preferred embodiment of a battery cell casing punching device.

Referring to fig. 3 and 4 in combination with fig. 1, the cell stamping apparatus includes a stamping mechanism 20, a first driving mechanism 30, and a cell stamping mold as described above, where the stamping mechanism 20 includes a first stamping portion 21 corresponding to the first stamping pit 11 of the cell stamping mold and a second stamping portion 22 corresponding to the second stamping pit 12, and the first driving mechanism 30 drives the first stamping portion 21 and the second stamping portion 22 to correspondingly extend into the first stamping pit 11 and the second stamping pit 12.

Set up rectangular strengthening rib 14 on the mould muscle 13 side through punching the shell mould at electric core, and the highest tip of strengthening rib 14 is greater than predetermineeing the punching degree of depth with first punching hole 11 or the second punching hole 12 open-ended distance, because first punching press portion 21 and second punching press portion 22 correspond the casing that punches formation different thickness, both correspond the degree of depth difference that stretches into first punching hole 11 and second punching hole 12, it is different to the transverse pressure of mould muscle 13, the setting up of strengthening rib 14 has increased the rigidity intensity of mould muscle 13, mould muscle 13 is difficult to produce deformation because of the punching pressure of first punching press portion 21 and second punching press portion 22, the life of extension electric core punching shell mould and electric core punching shell equipment, and therefore the cost is reduced, and the punching shell quality is improved simultaneously.

The first driving mechanism 30 can adopt a servo motor to drive the first punching part 21 and the second punching part 22 to extend into the corresponding first punching pit 11 and the second punching pit 12, and the precision is high. In other embodiments, the first driving mechanism 30 may use a driving member such as an air cylinder.

Further, with reference to fig. 1 and fig. 3, the battery cell punching apparatus further includes a base 40 having a through hole 41 and cooperating with the mold main body 10 to compress the aluminum-plastic film, and the first driving mechanism 30 drives the first punching portion 21 and the second punching portion 22 to penetrate through the through hole 41 on the base 40 and extend into the corresponding first punching pit 11 and the second punching pit 12. The through hole 41 includes a first sub-through hole 411 corresponding to the first punched part 21 and a second sub-through hole 412 corresponding to the second punched part 22, and the first sub-through hole 411 and the second sub-through hole 412 may be communicated with each other. In the actual operation process, the aluminum plastic film is pressed and clamped between the base 40 and the mold main body 10 of the cell stamping shell mold, the first driving mechanism 30 drives the first stamping part 21 and the second stamping part 22 to correspondingly extend into the first stamping pit 11 and the second stamping pit 12, and the aluminum plastic film is stamped by the first stamping part 21 and the second stamping part 22 to form the cell shell. The first and second sub through

holes

411 and 412 may guide the movement of the corresponding first and second punched

parts

21 and 22.

In order to further improve the moving stability of the first stamping part 21 and the second stamping part 22, the stamping mechanism 20 further includes a top plate 23 connected to the first driving mechanism 30, the first stamping part 21 and the second stamping part 22 are disposed on the top plate 23, and the first driving mechanism 30 drives the first stamping part 21 and the second stamping part 22 to extend into the corresponding first stamping pit 11 and the corresponding second stamping pit 12 through the top plate 23.

In this embodiment, referring to fig. 3 and 4, the battery cell casing punching device further includes a second driving mechanism 50 connected to the mold main body 10, and the second driving mechanism 50 drives the mold main body 10 to move, and cooperates with the base 40 to compress the aluminum-plastic film. The second driving mechanism 50 in this embodiment may use an air-hydraulic pressurizing cylinder to drive the mold main body 10 to move, and in other embodiments, other driving components such as a motor may be used.

Further, the cell casing punching apparatus further includes a guide mechanism 60 for guiding the movement of the first punching part 21, the second punching part 22, and the mold main body 10. The guide mechanism 60 guides the movement of the top plate 23 and the cell punching shell mold, so that the phenomenon that the two move to generate deviation in the moving process to cause aluminum plastic film punching wrinkles is avoided, and the shell punching quality is improved.

Specifically, referring to fig. 3, the guide mechanism 60 includes a plurality of guide members 61 installed on the base 40, guide holes 15 corresponding to the guide members 61 are provided on the top plate 23 and the die main body 10 of the cell stamping die, and each guide member 61 is disposed through the guide hole 15. The first driving mechanism 30 drives the top plate 23 to move smoothly under the guiding action of the guiding member 61 through the guiding hole 15, and the second driving mechanism 50 drives the mold main body 10 to move smoothly under the guiding action of the guiding member 61 through the guiding hole 15.

Further, referring to fig. 4, two sides of the base 40 are provided with first supporting portions 42, the top plate 23 is provided with second supporting portions 231, and bottom end surfaces of the second supporting portions 231 are flush with bottom end surfaces of the first supporting portions 42. When the mould main part 10 and the base 40 cooperate and press from both sides tight plastic-aluminum membrane, the pressure of first supporting part 42 and second supporting part 231 resolvable mould main part 10 to base 40 strengthens base 40's rigidity, reduces the deformation of base 40 under high-strength pressure, makes the plastic-aluminum membrane atress even, avoids the casing fold, improves the casing and dashes the system quality.

Specifically, the top plate 23 may be fabricated by: get the size for thickness is 30mm, length is 430mm, roof 23 (thickness, the size of length and width is only for the example reference, do not limit the utility model discloses a roof 23) that the width is 300mm, grind the surface with the grinding machine flat about roof 23, set up M8 countersunk screw hole site respectively about the below, and at roof 23 middle part trompil, the hole site specification is 30mm x 120mm, install second supporting part 231 in the trompil, and with M8 screw locking, confirm that the M8 screw does not fall, accomplish the preparation of roof 23.

The utility model discloses a specific theory of operation that shell mould was dashed to electric core as follows:

placing the aluminum-plastic film on the base 40 and between the base 40 and the die main body 10, enabling the gas-liquid pressurizing cylinder to work to drive the die main body 10 to move downwards, enabling the die main body 10 and the base 40 to be folded, continuously pressurizing the gas-liquid pressurizing cylinder to tightly press the aluminum-plastic film, enabling the first supporting part 42 on the base 40 and the second supporting part 231 on the top plate 23 to jointly bear the pressure from the gas-liquid pressurizing cylinder, and reducing the deformation of the base 40; after the aluminum-plastic film is compressed, the servo motor works, the top plate 23 is jacked up from bottom to top, the first stamping part 21 is driven to penetrate through the first sub-through hole 411 on the base 40 and extend into the first stamping pit 11 of the die main body 10, the aluminum-plastic film is pressed into the first stamping pit 11, the second stamping part 22 penetrates through the second sub-through hole 412 on the base 40 and extends into the second stamping pit 12 of the die main body 10, the aluminum-plastic film is pressed into the first stamping pit 11, the aluminum-plastic film is stamped to form shells corresponding to the front face and the back face of the battery cell, and the stamping of the battery cell shell is completed. After punching, the servo motor drives the top plate 23 to move downwards, drives the first punching part 21 and the second punching part 22 to move downwards, returns to the original position, and returns the gas-liquid pressurizing cylinder to the original position.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. The utility model provides an electricity core dashes shell mould, its characterized in that, includes the mould main part, the mould main part is equipped with the first system hole and the second system hole of dashing that are used for dashing electric core shell, first system hole and second system of dashing form the mould muscle between the hole, the side of mould muscle is predetermine high department and is provided with the strengthening rib, the highest tip of strengthening rib is greater than predetermine system degree of depth with the first system hole opening of dashing or the second system hole opening apart from.

2. The cell stamping shell mold according to claim 1, wherein the reinforcing ribs are arranged along a horizontal direction of the mold rib.

3. The cell stamping shell mold according to claim 1, wherein the reinforcing ribs are obliquely arranged on the mold ribs.

4. The cell stamping shell mold according to claim 1, wherein the mold ribs and the reinforcing ribs are integrally arranged.

5. The cell stamping shell mold according to any of claims 1 to 4, wherein the first stamping pit and/or the second stamping pit are disposed through opposite end faces of the mold body.

6. The cell stamping shell mold according to any of claims 1 to 4, wherein the first stamping pit and/or the second stamping pit is a slot provided in the mold body.

7. The cell stamping die according to any one of claims 1 to 4, wherein the reinforcing ribs are of a strip structure or a strip pattern structure.

8. A battery cell shell punching device, comprising a punching mechanism, a first driving mechanism and the battery cell shell punching mold according to any one of claims 1 to 7, wherein the punching mechanism comprises a first punching portion corresponding to a first punching pit of the battery cell shell punching mold and a second punching portion corresponding to a second punching pit, and the first driving mechanism drives the first punching portion and the second punching portion to correspondingly extend into the first punching pit and the second punching pit.

9. The electric core shell punching device of claim 8, further comprising a base provided with a through hole and matched with the mold main body to compress the aluminum-plastic film, wherein the first driving mechanism drives the first punching portion and the second punching portion to penetrate through the through hole on the base and extend into the corresponding first punching pit and the second punching pit.

10. The electric core shell punching device of claim 8, further comprising a second driving mechanism connected to the mold main body, wherein the second driving mechanism drives the mold main body to move, and the second driving mechanism cooperates with the base to compress the aluminum-plastic film.