CN218395463U

CN218395463U - Explosion-proof groove stamping device of power battery shell

Info

Publication number: CN218395463U
Application number: CN202222814272.8U
Authority: CN
Inventors: 刘路红; 聂炳南
Original assignee: Jiangxi Zuguang Energy Technology Co ltd
Current assignee: Jiangxi Zuguang Energy Technology Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-01-31
Anticipated expiration: 2032-10-25

Abstract

The utility model provides an explosion-proof groove stamping device of a power battery shell, which comprises a stamping part and a die part; the punching part comprises a mounting block, a punch head mounted at the bottom of the mounting block and a plurality of vertical inserting rods with the same height, and the bottom ends of the inserting rods are provided with chamfered parts; the die part comprises a die plate and a die holder, wherein the center of the die plate is provided with a placing through groove corresponding to the punch, a supporting block is assembled in the die holder in a sliding manner, and a jacking device is arranged below the supporting block; the template top surface has the jack that corresponds with the inserted bar, corresponds each jack and slides respectively in the template and is equipped with the cutter unit that can stretch out from placing the lateral wall that leads to the groove, and cutter unit includes towards placing the blade that leads to groove one side, the fixing base to and the spring unit that the drive fixing base contracts, the fixing base has the drive hole that corresponds with the jack, during the reset state, the drive hole is skew to template outer wall one side. The stamping device can be used for automatic continuous production, has high production efficiency, and has stable stamping quality of the explosion-proof groove, thereby meeting the requirements of power batteries.

Description

Explosion-proof groove stamping device of power battery shell

Technical Field

The utility model relates to a power battery production facility technical field specifically indicates an explosion-proof groove stamping device of power battery shell.

Background

The safety requirement of power energy storage battery is very high, need can not produce the explosion when the condition such as the swelling bag takes place because of generating heat in the battery inside, consequently need set up explosion-proof groove on the battery case, when battery internal pressure exceeded the default, can make explosion-proof groove split in order to release pressure. The explosion-proof groove of the existing battery case is processed manually after the battery case is produced, but for the power battery case, on one hand, the labor intensity is high due to the large volume of the power battery case and the manual processing mode, and continuous production cannot be realized, so that the production efficiency is low; on the other hand, the positions of the explosion-proof grooves on the two sides of the battery shell are difficult to align, and the processing quality of each explosion-proof groove is difficult to unify, so that the quality of the subsequent power battery fluctuates.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high and stable quality's of production efficiency power battery shell explosion-proof groove stamping device.

In order to achieve the above object, the utility model adopts the following technical scheme:

an explosion-proof groove punching device of a power battery shell comprises a punching part and a die part; the punching part comprises an installation block, a punch head arranged at the center of the bottom of the installation block and a plurality of equal-height inserting rods vertically fixed below the installation plate, and the bottom end of each inserting rod is provided with a chamfer part; the die part comprises a die plate and a die holder fixed below the die plate, a placing through groove corresponding to the punch and used for placing a battery case is formed in the center of the die plate, a supporting block concentric with the placing through groove and used for supporting the battery case is assembled in the die holder in a sliding mode, and a jacking device for driving the supporting block to lift is arranged below the supporting block; the top surface of the template is provided with a plurality of jacks corresponding to the inserted rods respectively, the positions corresponding to the jacks in the template are respectively and slidably assembled with a transverse cutter assembly which can extend out of the side wall of the placing through groove, the cutter assembly comprises a blade facing one side of the placing through groove, a fixed seat for mounting the blade and a spring assembly for driving the fixed seat to retract, the fixed seat is provided with a driving hole corresponding to the jack, and in a reset state, the driving hole deviates from the central position of the jack towards one side of the outer wall of the template.

The utility model provides an optimal scheme, in the template towards place logical groove one side and seted up slidable mounting the horizontal mounting hole of fixing base, the template towards outer wall one side seted up with the concentric counter bore of mounting hole, spring unit includes along the counter bore axle center penetrates the mounting hole and with fixing base threaded connection's installation pole, movably the cover is located on the installation pole and support the top in the fixed plate of counter bore bottom surface, the cover is located on the installation pole and support the top in the compression spring of fixed plate lateral surface, and be fixed in on the installation pole and support the top in the movable plate of compression spring outer end.

According to the preferable scheme, the two vertical side walls of the fixing seat are further provided with limiting grooves along the moving direction of the fixing seat, and the limiting grooves are internally provided with vertical two ends and limiting columns which are fixed by the template and used for limiting the left-right swinging of the fixing seat during moving.

According to a preferable scheme, the cutter assembly comprises four cutter assemblies which are respectively arranged on the side surfaces of two long sides of the through groove and correspond to each other in pairs.

According to a preferable scheme, the stamping part further comprises a die handle which is vertically and concentrically fixed above the mounting block, the punch is assembled in the center of the mounting block in a sliding mode, the center of the bottom end of the die handle is further provided with an accommodating cavity which extends upwards along a center line, and a buffer spring with the bottom end abutting against the top end of the punch is arranged in the accommodating cavity.

According to a preferable scheme, the jacking device is a jacking cylinder, a hollow connecting sleeve is concentrically fixed at the bottom of the die holder, and the jacking cylinder is concentrically arranged at the bottom of the connecting sleeve.

The beneficial effects of the utility model reside in that: placing a battery case to be punched into the placing through groove with an opening facing upwards until the battery case is contacted with the top end of the supporting block, driving the punch to extend into the battery case to descend by a punch press, and simultaneously, enabling the insert rod to penetrate through the insert hole and be inserted into the driving hole, so that the fixed seat is forced to drive the blade to transversely extend out of the side wall of the placing through groove, and punching a plurality of anti-explosion grooves on the side wall of the battery case; after the punch forming of the explosion-proof groove is completed, the punching part moves upwards, the cutter assembly resets and retracts into the template, and the jacking device drives the supporting block to ascend to push out the battery shell. The stamping device can be used for automatic continuous production, has high production efficiency, and has stable stamping quality of the explosion-proof groove, thereby meeting the requirements of power batteries.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view showing the overall structure of a punching apparatus according to an embodiment;

FIG. 2 is a schematic cross-sectional view of a stamping apparatus according to an embodiment;

FIG. 3 is a schematic view showing the installation structure of the die plate, the blade assembly and the supporting block in the embodiment;

FIG. 4 is a schematic structural view of a cutter assembly in the embodiment;

FIG. 5 is a sectional view of the mounting structure of the cutter unit and the die plate in the embodiment.

Detailed Description

The invention is further explained below with reference to the drawings:

referring to fig. 1 to 5, the present embodiment is described by taking as an example an explosion-proof groove punching device of a power battery case, which is installed on a punch press for use, and includes a punching part 1 installed on a slide block of the punch press, and a die part 2 installed on a table of the punch press.

The punching part 1 comprises a vertical die handle 11, a mounting block 12 concentrically fixed at the lower end of the die handle 11, a punch 13 concentrically and slidably matched with the center of the mounting block 12, and a plurality of equal-height inserted rods 14 vertically fixed below the mounting block. The bottom center of the die shank 11 is further provided with an accommodating cavity extending upwards along the center line, and a buffer spring 15 with the bottom end abutting against the top end of the punch 13 is arranged in the accommodating cavity. Of course, the top end of the punch 13 also has a stopper portion that restricts it from sliding downward out of the mounting block 12. The number and the position of the inserted rods 14 correspond to those of the explosion-proof grooves to be processed one by one, and the bottom end of each inserted rod 14 is provided with a chamfer.

The mold part 2 comprises a horizontal mold plate 21, a mold base 22 concentrically fixed below the mold plate 21, a hollow connecting sleeve 23 concentrically fixed below the mold base 22, and a jacking cylinder 24 concentrically installed at the bottom of the connecting sleeve 23. The center of the die plate 21 is provided with a placing through groove 211 corresponding to the punch 13 and used for placing a battery case, the die holder 22 is provided with a vertical sliding groove concentric with the placing through groove 211, a supporting block 25 used for supporting the battery case is further arranged in the vertical sliding groove in a sliding fit mode, and the bottom end of the supporting block 25 is connected with the driving end of the jacking cylinder 24.

A plurality of vertical insertion holes 212 corresponding to the insertion rods 14 are formed in the top surface of the template 21 corresponding to the two sides of the placing through groove 211, and a transverse cutter assembly 26 capable of extending out of the side wall of the placing through groove 211 is slidably assembled in the template 21 corresponding to the insertion holes 212; specifically, four cutter assemblies 26 corresponding to each other in pairs are respectively arranged on two long side surfaces of the through groove 211. The cutter assembly 26 includes a blade 261 having a blade edge facing the side of the placing through groove 211, a fixing seat 262 for mounting the blade 261, and a spring assembly 263 for pulling the fixing seat 262 to retract, wherein the fixing seat 262 has a driving hole 2621 corresponding to the insertion hole 212, and in a reset state, the driving hole 2621 deviates from the center position of the insertion hole 212 to the side of the outer wall of the template 21 under the pulling force of the spring assembly 263, and at this time, the blade 261 does not exceed the side wall of the placing through groove 211.

The working principle of the stamping device is as follows: in an initial state, the jacking cylinder 24 is at the lowest position, so that the supporting block 25 descends to the lowest position, and at the moment, the opening of the battery case to be punched is placed into the placing through groove 211 upwards until the opening of the battery case is contacted with the top end of the supporting block 25; the punching part 1 is driven by a punch press to press downwards, the punch 13 extends into a battery case and continues to descend, after the bottom end of the punch 13 abuts against the inner bottom of the battery case, the buffer spring 15 can be compressed and continues to descend until the inserted link 14 passes through the jack 212, and the inserted link 14 is guided into the driving hole 2621 by the chamfer part, so that the fixed seat 262 is forced to drive the blade 261 to transversely extend out of the side wall of the placing through groove 211, and the side wall of the battery case is simultaneously punched out of a plurality of anti-explosion grooves. After the punch forming of the explosion-proof slot is completed, the punching part 1 moves upwards, the punch 13 continues to abut against the inner bottom of the battery case under the pressure of the buffer spring 15, the inserted link 14 is separated upwards from the driving hole 2621, and at this time, the fixed seat 262 is reset under the pulling force of the spring assembly 263 and retracts into the template 21; after the stamping part 1 is reset, the jacking cylinder 24 drives the supporting block 25 to ascend, and the battery shell is jacked out. The punching device can be integrated into a battery shell production line for automatic continuous production, the production efficiency is high, the quality of the explosion-proof groove is very stable, and the requirement of a power battery is met.

In other embodiments, the stamping part 1 may not be provided with the buffer spring 15, and the punch 13 is rigidly connected to the mounting block 12 and ascends and descends synchronously with the plunger 14. Correspondingly, the jacking cylinder 24 of the die part 2 can be replaced by a plurality of springs, and stamping buffering and product jacking can be realized.

One specific structure of the cutter assembly 26 and the spring assembly 263 thereof is as follows: a transverse mounting hole 213 for slidably mounting the fixing seat 262 is formed in one side of the placing through groove 211 in the mold plate 21, a counter bore 214 concentric with the mounting hole 213 is formed in one side of the outer wall of the mold plate 21, the spring assembly 263 includes a mounting rod 2631 penetrating the mounting hole 213 along the axis of the counter bore 214 and threadedly connected to the fixing seat 262, a fixed plate 2632 movably sleeved on the mounting rod 2631 and abutting against the bottom surface of the counter bore 214, a compression spring 2633 sleeved on the mounting rod 2631 and abutting against the outer side surface of the fixed plate 2632, and a movable plate 2634 fixed on the mounting rod 2631 and abutting against the outer end of the compression spring 2633. The working principle is as follows: when the inserting rod 14 is inserted into the driving hole 2621, the fixing seat 262 is pressed by the inserting rod 14 to drive the blade 261 to move toward one side of the battery case, at this time, the fixing seat 262 drives the mounting rod 2631 to move, so that the compression spring 2633 is compressed by the movable plate 2634 (the other end of the compression spring 2633 is limited by the fixed plate 2632), and when the inserting rod 14 moves upward and leaves the driving hole 2621, the compression spring 2633 is reset, so that the blade 261 is driven to retract into the template 21. When the structure is installed, the fixing seat 262 with the blade 261 is installed into the template 21 from the side of the installation hole 213, the installation rod 2631, the fixed plate 2632, the compression spring 2633 and the movable plate 2634 are installed into the counter bore 214 from the outer side of the template 21, and finally the installation rod 2631 and the fixing seat 262 are connected through threads; the installation is convenient, the threaded combination length of the whole installation rod 2631 and the fixed seat 262 is adjusted by rotating, the position of the blade 261 can be adjusted, and the battery case fixing device is suitable for production of battery cases of different specifications and models. In other embodiments, the spring assembly 263 can also be a tension spring with one end fixed to the form 21 and the other end connected to the fixed seat 262; or a compression spring sleeved on the fixing base 262 and abutting against the fixing base 262 and the mold plate 21. Further, in order to improve the stability when the fixing base 262 moves, the vertical two side walls of the fixing base 262 are further provided with limit grooves 2622 along the moving direction of the fixing base, the limit grooves 2622 are internally provided with vertical two ends and limit columns 2623 fixed on the template 21, and the limit columns 2623 on the two sides are used for limiting the left-right swinging of the fixing base 262 when moving.

The above description is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an explosion-proof groove stamping device of power battery shell which characterized in that: comprises a punching part and a die part; the punching part comprises an installation block, a punch head arranged at the center of the bottom of the installation block and a plurality of equal-height inserting rods vertically fixed below the installation plate, and the bottom end of each inserting rod is provided with a chamfer part; the die part comprises a die plate and a die holder fixed below the die plate, a placing through groove corresponding to the punch and used for placing a battery case is formed in the center of the die plate, a supporting block concentric with the placing through groove and used for supporting the battery case is assembled in the die holder in a sliding mode, and a jacking device for driving the supporting block to lift is arranged below the supporting block; the top surface of the template is provided with a plurality of jacks corresponding to the inserted rods respectively, the positions corresponding to the jacks in the template are respectively and slidably assembled with a transverse cutter assembly which can extend out of the side wall of the placing through groove, the cutter assembly comprises a blade facing one side of the placing through groove, a fixed seat for mounting the blade and a spring assembly for driving the fixed seat to retract, the fixed seat is provided with a driving hole corresponding to the jack, and in a reset state, the driving hole deviates from the central position of the jack towards one side of the outer wall of the template.

2. The explosion-proof groove punching device of the power battery shell as claimed in claim 1, characterized in that: the spring assembly comprises an installation rod, a fixed plate, a compression spring and a movable plate, wherein the installation rod penetrates through the installation hole and is in threaded connection with the fixed seat, the fixed plate is movably sleeved on the installation rod and abuts against the bottom surface of the counter bore, the compression spring is sleeved on the installation rod and abuts against the outer side surface of the fixed plate, and the movable plate is fixed on the installation rod and abuts against the outer end of the compression spring.

3. The explosion-proof groove punching device of the power battery shell as claimed in claim 2, characterized in that: the vertical both sides wall of fixing base still is equipped with along its moving direction's spacing groove, the spacing inslot be equipped with vertical both ends with the fixed spacing post that is used for restricting of template take place horizontal hunting when the fixing base removes.

4. The explosion-proof groove punching device of the power battery shell according to claim 3, characterized in that: the cutter assembly comprises four cutter assemblies which are respectively arranged on the two long side surfaces of the through groove and correspond to each other in pairs.

5. The explosion-proof groove punching device of the power battery shell as claimed in claim 1, characterized in that: the punching part further comprises a die handle which is vertically and concentrically fixed above the mounting block, the punch is assembled in the center of the mounting block in a sliding mode, the bottom end center of the die handle is further provided with an accommodating cavity extending upwards along the center line, and a buffer spring with the bottom end abutting against the top end of the punch is arranged in the accommodating cavity.

6. The explosion-proof groove punching device of the power battery shell as claimed in claim 1, characterized in that: the jacking device is a jacking cylinder, a hollow connecting sleeve is concentrically fixed at the bottom of the die holder, and the jacking cylinder is concentrically arranged at the bottom of the connecting sleeve.