CN109226506B - Terrace die and assembly for stamping easily-broken grooves on integral lithium battery explosion-proof cover plate - Google Patents

Abstract

The invention relates to a punch and assembly for punching a breakable groove on an explosion-proof cover plate of an integral lithium battery, including a punch, a rotating worm wheel, a worm, a coupling, a micro motor, and a computer. One end of the worm is installed on the In the fixed seat, the other end is connected to the micro motor, the worm is meshed with the rotating worm gear, the rotating worm gear is connected to the punch through the screw and the nut, the micro motor is connected to the computer, the computer controls the micro motor to drive the worm to drive the rotating worm wheel and the screw to rotate, and the screw drives the punch through the nut Move up and down to fine-tune the punching height of the breakable groove. The invention mainly solves the technical problem that the strength difference of each roll of aluminum plate can be solved by means of the fine-tuning device, and the thinnest thickness at the breakable groove can be adjusted in time according to the material strength performance during production, and can realize the stamping of the punch of the breakable groove Fine-tune the height.

Description

Punch and components for stamping breakable grooves on the integral lithium battery explosion-proof cover

technical field

The invention relates to a stamping die for an integral explosion-proof cover plate of a lithium battery, in particular to a punch used for punching and forming breakable grooves on the cover plate of an explosion-proof aluminum shell of a power battery.

Background technique

With the rapid development of battery technology, the use of explosion-proof aluminum shells has become a requirement in the current battery industry. At present, the explosion-proof aluminum shell mainly adopts two methods of covering the cover plate with a film and pressing the breakable groove. Since the cover plate film is welded or bonded to the film, its application and promotion are restricted to a certain extent due to its high cost and poor processability; while the cover plate is used to press the easy-to-break groove method to use a mold on the battery seal. A groove of a certain shape and depth is punched out on the cover to achieve the purpose of pressure relief. It is relatively easy to manufacture, low in cost, and will not add any trouble to the battery manufacturing process, so it has been widely used at home and abroad. However, in order to ensure the safety of lithium batteries, the detonation pressure is generally designed to have a limited pressure range. When the pressure of the breakable groove exceeds the specified pressure, it will rupture, so as to achieve the explosion-proof effect. However, due to the differences in the composition and process of aluminum plates produced by various companies Therefore, even if each roll of aluminum plate produced by the same enterprise will have different strength properties, it is generally required that the thinnest thickness at the breakable groove can be adjusted in time according to the material strength during production, so as to achieve the explosion-proof effect.

Contents of the invention

In order to solve the difference in the strength of each roll of aluminum plate, it is required that the thinnest thickness at the breakable groove can be adjusted in time according to the strength performance of the material during production, so as to achieve an explosion-proof effect. The invention provides an explosion-proof cover plate for stamping an integral lithium battery The punch and components of the breakable groove can be used to fine-tune the punching height of the breakable groove.

In order to achieve the above object, the technical solution of the present invention is: a punch and assembly for stamping the breakable groove on the integral lithium battery explosion-proof cover, including the punch, the rotating worm gear, the worm, the micro motor, the computer, the One end of the worm is installed in the fixed seat, and the other end is connected to the micro motor. The worm meshes with the rotating worm gear. The nut drives the punch to move up and down to realize the fine adjustment of the stamping height of the easily broken groove.

Further, the punch is composed of three parts, the lower part is a well-shaped part, the middle part is a square body, and the upper part is a cylinder in which a connecting nut is fixed.

Further, the center of the rotating worm gear is fixedly connected with a screw, and the screw is screwed and connected with the nut in the upper cylinder of the punch.

Further, the worm is connected to the micro motor through a coupling.

Further, the computer receives the data of the thinnest thickness of the breakable groove input by the user, and calculates the number of cycles required for the micro motor to run through processing.

The beneficial effects of the present invention are:

The punch and components for punching breakable grooves on the cover plate of the explosion-proof aluminum shell of the power battery of the present invention mainly solve the strength difference of each roll of aluminum plate through the fine-tuning device, and the thinnest thickness of the breakable groove can be determined according to the strength performance of the material. The technical problem of timely adjustment during production can realize the fine adjustment of the stamping height of the punch that is easy to break the groove.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the punch and components used for stamping the breakable groove on the explosion-proof cover plate of the integral lithium battery of the present invention;

Fig. 2 is a schematic diagram of punch structure;

Fig. 3 is a schematic diagram of one end of the worm being installed in the fixing seat.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 3, a punch and assembly for punching a breakable groove on an integral lithium battery explosion-proof cover, including a punch 1, a rotating worm wheel 2, a worm 3, a coupling 4, a miniature Motor 5, computer 6, screw rod 11, nut 12. One end of the worm 3 is installed in the fixed seat 10, the other end is connected to the micro motor 5, the worm 3 meshes with the rotating worm gear 2, the rotating worm gear 2 is connected to the punch 1 through the screw 11 and the nut 12, the micro motor 5 is connected to the computer 6, and the computer 6 controls the micro The motor 5 drives the worm 3 to drive the rotating worm wheel 2 and the screw to rotate, and the screw drives the punch 1 to move up and down through the nut, so as to realize the fine adjustment of the stamping height of the easily broken groove.

As shown in Figure 2, the punch 1 is composed of three parts, the lower part 7 is a well-shaped part, which is used to stamp the well-shaped easy-to-break groove, the middle part 8 is a square body, and is used to move the punch up and down. The upper part 9 is Cylinder, the connection nut 12 is fixed in the cylinder. The center of the rotating worm gear 2 is fixedly connected with a screw rod 11, and the screw rod 11 is screwed and connected with the nut 12 in the upper cylinder 9 of the punch.

Worm screw 2 is connected with micromotor 5 and computer 6 etc. by coupling 4. The user inputs the thinnest thickness of the breakable groove on the computer 5, and the computer 6 calculates the number of cycles required for the operation of the micro motor 5, and the micro motor 5 thus drives the worm 3 to rotate, thereby driving the rotating worm wheel 2 to rotate, and the rotating worm wheel 2 rotates every One turn clockwise drives the punch 1 to move upward, and each turn counterclockwise drives the punch 1 to move down, thereby obtaining a punch that does not exceed the punching height, and realizing easy-to-break grooves of different thicknesses.

Claims (3)

1. A terrace die and subassembly that is used for punching press to break the recess easily on integral lithium cell explosion-proof apron, includes terrace die (1), rotatory worm wheel (2), worm (3), miniature motor (5), computer (6), its characterized in that: one end of the worm (3) is arranged in the fixed seat (10), the other end of the worm is connected with the micro motor (5), the worm (3) is meshed with the rotary worm wheel (2), the rotary worm wheel (2) is connected with the male die (1) through the screw rod (11) and the nut (12), the micro motor (5) is connected with the computer (6), the computer (6) controls the micro motor (5) to drive the worm (3) to drive the rotary worm wheel (2) and the screw rod (11) to rotate, and the screw rod (11) drives the male die (1) to move up and down through the nut (12), so that fine adjustment of the stamping height of the male die with the easily broken groove is realized; the male die (1) consists of three parts, wherein the lower part (7) is a cross-shaped part, the middle part (8) is a square body, the upper part (9) is a cylinder, and a connecting nut (12) is fixed in the cylinder; the center of the rotary worm wheel (2) is fixedly connected with a screw rod (11), and the screw rod (11) is in screwed connection with a nut (12) in a cylinder at the upper part (9) of the male die.

2. The male die and assembly for stamping a frangible recess in an explosion-proof cover for a lithium battery of claim 1, wherein: the worm (3) is connected with the miniature motor (5) through the coupling (4).

3. The male die and assembly for stamping a frangible recess in an explosion-proof cover for a lithium battery of claim 1, wherein: the computer (6) receives the thinnest thickness data of the breakable groove input by a user, and calculates the number of cycles required by the running of the miniature motor (5) through processing.

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