CN211804559U - Utmost point ear welding jig device - Google Patents

Abstract

A tab welding jig apparatus comprising: the guide post fixing device comprises an upper clamping plate and a lower clamping plate arranged below the upper clamping plate at a certain interval, wherein a pair of first hasps are respectively arranged on two opposite sides of the upper clamping plate, and a plurality of first mounting holes for guide posts to pass through are respectively arranged on two sides of each first hasp; a plurality of second mounting holes for the guide posts to penetrate through are formed in two opposite sides of the lower clamping plate respectively, and second hasps are mounted on two sides of the lower clamping plate respectively; the upper clamp plate and the lower clamp plate are buckled with each other, two guide pillars positioned on two sides of the lower clamp plate penetrate through a first mounting hole positioned on the upper clamp plate, the first hasp and the second hasp are buckled with each other, and a soft-packaged naked electric core to be placed in the upper clamp plate and used for welding a tab is clamped tightly. The utility model can not only fasten bare cell, weld the electrode ear on the current collector and the connecting electrode ear together; in addition, the occurrence of poor welding such as insufficient welding or over welding is reduced, the service life of the battery is prolonged, and the loss of the battery capacity is reduced.

Description

Utmost point ear welding jig device

Technical Field

The utility model belongs to the machine-building field especially relates to utmost point ear welding jig device.

Background

With the development of new energy industry, the application of lithium ion batteries in the new energy industry is more and more extensive.

At present, batteries classified in terms of geometric shape and applied to new energy industries include cylindrical batteries, square batteries and pouch batteries. Different types of cylindrical batteries are applied to power systems, energy storage systems and electronic products in daily life according to the energy of the cylindrical batteries; among them, the square battery is widely and largely applied to a power system due to its advantage of energy density; due to high safety and high energy density, the soft package battery is also applied to energy storage systems, power systems and electronic products by combining two or more batteries in series and parallel to form a module so as to increase the capacity or increase the voltage (namely, PACK) of the battery, and the like.

In the manufacturing process of the lithium ion battery, the manufacturing procedures of different types of batteries are substantially the same, and the manufacturing process comprises the following steps: stirring, coating, rolling, tabletting and forming; the later stage comprises: baking, injecting liquid, standing, forming, degassing, grading and the like. Wherein, in the manufacturing process of earlier stage, there is the process of welding utmost point ear in the piece forming technology, regarding laminate polymer core, generally adopt ultrasonic bonding, the utmost point ear that extends naked electric core from the mass flow body links together with the compound utmost point ear of aluminium utmost point ear/copper nickel plating to increase the length and the intensity of mass flow body utmost point ear, be convenient for the battery become in the manufacturing process, after partial volume process and electric core shaping formed the battery finished product, easily the clamping is connected, consequently, this process of welding utmost point ear is crucial in the battery manufacturing process. Meanwhile, the quality of the tab welding is related to the quality of the finished battery and the service life of the battery in the future. When the tab is welded, because the tab is not welded with a device for fixing a bare cell, poor welding phenomena such as insufficient welding or over welding and the like generally occur, the internal resistance of the battery is increased due to the insufficient welding, and the tab drops and is connected insecurely in the charging and discharging processes, so that the service life of the battery is seriously influenced; the over-welding not only can increase the internal resistance of the battery, but also can lead the electrode lugs to be broken in the charging and discharging process of the battery, and seriously influences the transmission channel of electrons, thereby causing the service life of the battery to be shortened. Therefore, a tab welding jig device is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a utmost point ear welding jig device to solve the technical problem of bad phenomena such as overwelding or rosin joint appear in the naked electric core utmost point ear of package.

In order to achieve the above purpose, the specific technical solution of the present invention is as follows:

a tab welding jig apparatus comprising: the guide post fixing device comprises an upper clamping plate and a lower clamping plate arranged below the upper clamping plate at a certain interval, wherein a pair of first hasps are respectively arranged on two opposite sides of the upper clamping plate, and a plurality of first mounting holes for guide posts to pass through are respectively arranged on two sides of each first hasp; a plurality of second mounting holes for the guide posts to penetrate through are formed in two opposite sides of the lower clamping plate respectively, and second hasps are mounted on two sides of the lower clamping plate respectively; the upper clamp plate and the lower clamp plate are buckled with each other, two guide pillars positioned on two sides of the lower clamp plate penetrate through a first mounting hole positioned on the upper clamp plate, the first hasp and the second hasp are buckled with each other, and a soft-packaged naked electric core to be placed in the upper clamp plate and used for welding a tab is clamped tightly.

The upper clamping plate is of a rectangular plate-shaped structure.

The lower clamping plate is of a rectangular plate-shaped structure with the same size as the upper clamping plate; the upper part of the lower clamping plate is arranged downwards, and is a concave groove when viewed from the front; the lower part of the lower splint is arranged in a hollowed-out way which is concave upwards, and the lower splint is shaped like a Pi when seen from the side.

The guide post is installed in the second installation hole, and the second installation hole corresponds to the first installation hole on the upper clamping plate.

The soft-packaged naked battery cell of the tab to be welded is placed in the concave groove of the lower clamping plate; and the upper clamping plate and the lower clamping plate are suitable for soft package batteries with different models.

The first hasp and the second hasp are double-spring hasps.

And the upper clamping plate and the lower clamping plate are sprayed with insulating coatings.

The utility model has the advantages of it is following:

1. the soft-packaged naked battery cell is fixed, so that a tab extending out of a current collector and a connecting tab are convenient to weld;

2. the structure is simple, the operation is convenient, and the assembly is easy;

3. the battery can adapt to batteries of different models, and has wide applicability;

4. the soft-package naked battery core can be fastened, and the soft-package battery can be molded conveniently;

5. it can fasten naked electric core, makes utmost point ear on the mass flow body neat, level and smooth, through ultrasonic welding device, with utmost point ear on the mass flow body with connect utmost point ear welding together to, reduced the production of bad phenomenon of welding such as rosin joint or overwelding, in order to reach and reduce the internal resistance, prolonged the life of battery, reduced the loss of battery capacity.

Drawings

Fig. 1 is a first axial schematic view of the present invention;

fig. 2 is an exploded schematic view of the present invention;

fig. 3 is a second axial view of the present invention;

FIG. 4-1 is a schematic front view of the present invention;

fig. 4-2 is a schematic side view of the present invention;

fig. 4-3 are schematic top views of the present invention.

The notation in the figure is:

1. an upper splint; 2. a first buckle; 3. a screw; 4. a guide post; 5. a lower splint; 6. a pin; 7. and a second buckle.

Detailed Description

For better understanding of the objects, structure and functions of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4-3, the present invention includes: an upper splint 1, a lower splint 5 arranged under the upper splint 1 with a certain distance, wherein,

the upper splint 1 is of a rectangular plate-shaped structure; the two opposite sides of the upper splint 1 are respectively provided with a pair of first hasps 2 by adopting a screw 3 connection mode, and the two sides of the first hasps 2 are respectively provided with a plurality of (two in the embodiment) first mounting holes for the guide posts 4 to pass through.

The lower plate 5 is a rectangular plate-shaped structure with the same size as the upper plate 1, wherein a plurality of (two in this embodiment) second mounting holes for the guide pillars 4 to pass through are respectively formed on two opposite sides of the lower plate 5, the guide pillars 4 are mounted in the second mounting holes in a plugging and pin 6 fastening manner, and the second mounting holes correspond to the first mounting holes on the upper plate 1.

The upper part of the lower splint 5 is arranged downwards and is a concave groove when viewed from the front; the lower part of the lower splint 5 is hollowed out and is concave upwards, and the lower part is in a II shape when viewed from the side, so that the whole weight can be reduced; and the II-shaped two sides of the lower splint 5 are respectively provided with a second hasp 7.

The upper clamping plate 1 and the lower clamping plate 5 are buckled with each other, two guide posts 4 positioned on two sides of the lower clamping plate 5 penetrate through a first mounting hole positioned on the upper clamping plate 1, and the first hasp 2 and the second hasp 7 are buckled with each other to clamp a soft package naked electric core of a tab to be welded, which is placed in a concave groove of the lower clamping plate 5; and the upper clamping plate 1 and the lower clamping plate 5 can adapt to soft package batteries of different models.

The first hasp 2 and the second hasp 7 are double-spring hasps.

The upper clamping plate 1 and the lower clamping plate 5 are coated with an insulating coating, which is teflon (PFA) in this embodiment, and can play an insulating role.

The utility model discloses an assembly mode as follows:

the method comprises the following steps: fixing the guide post 4 on the lower splint 5 by a pin 6;

step two: the first hasp 2 and the second hasp 7 are fastened by screws and are respectively arranged on the upper clamping plate 1 and the lower clamping plate 5, and the assembly is completed.

The working process is as follows:

the first step is as follows: the method comprises the following steps of placing a soft-packaged bare cell of a tab to be welded on a lower clamp plate 5, slowly sliding an upper clamp plate 1 along a guide pillar 4 to contact the soft-packaged bare cell of the tab to be welded, and placing the soft-packaged bare cell of the tab to be welded between the upper clamp plate and the lower clamp plate so as to clamp the soft-packaged bare cell of the tab to be welded;

the second step is that: the second hasp 7 on the lower clamping plate 5 is upwards sleeved on the first hasp 2, the retaining ring is downwards pulled to be locked, and at the moment, a soft-packaged naked battery cell of a tab to be welded is fixedly locked, so that the follow-up tab welding process is facilitated.

Above-mentioned working process, when the soft-packaged naked electric core of fastening locking, because the clamp force is applyed respectively to naked electric core to upper and lower splint, be favorable to the shaping of soft-packaged naked electric core.

The test steps are as follows:

the three-element soft package battery with the size of 44mm x 63mm x 112mm is used as an experimental battery, and the experimental steps are as follows:

s1: assembling, namely fixing the guide post 4 on the lower clamping plate 5 by using a pin 6; and the first hasp 2 and the second hasp 7 are fastened on the upper clamping plate 1 and the lower clamping plate 5 respectively by screws, thus completing the assembly.

S2: placing a soft-packaged naked battery cell of a tab to be welded; on the lower plate 5 will be arranged in to the naked electric core of soft package of treating welding utmost point ear, punch holder 1 slowly glides to the contact along guide pillar 4 and treats the naked electric core of soft package of welding utmost point ear, makes the naked electric core of soft package of treating welding utmost point ear arrange in between upper and lower plate to the clamp is tight treats the naked electric core of soft package of welding utmost point ear.

S3: fixing and locking; the second snap 7 on the lower splint 5, namely: the lower buckle of the spring buckle is upwards buckled to the first buckle 2 sleeved on the upper clamping plate 1, namely: the upper buckle of the spring buckle pulls the buckle ring downwards to be locked, and at the moment, the soft-packaged naked battery cell of the tab to be welded is fixedly locked, so that the subsequent welding process is facilitated.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims (7)

1. The utility model provides a utmost point ear welding jig device which characterized in that includes: the guide post fixing device comprises an upper clamping plate and a lower clamping plate arranged below the upper clamping plate at a certain interval, wherein a pair of first hasps are respectively arranged on two opposite sides of the upper clamping plate, and a plurality of first mounting holes for guide posts to pass through are respectively arranged on two sides of each first hasp; a plurality of second mounting holes for the guide posts to penetrate through are formed in two opposite sides of the lower clamping plate respectively, and second hasps are mounted on two sides of the lower clamping plate respectively; the upper clamp plate and the lower clamp plate are buckled with each other, two guide pillars positioned on two sides of the lower clamp plate penetrate through a first mounting hole positioned on the upper clamp plate, the first hasp and the second hasp are buckled with each other, and a soft-packaged naked electric core to be placed in the upper clamp plate and used for welding a tab is clamped tightly.

2. The tab welding jig apparatus as claimed in claim 1, wherein the upper clamping plate has a rectangular plate-like configuration.

3. The tab welding jig apparatus as claimed in claim 1, wherein the lower clamping plate has a rectangular plate-like structure having the same size as the upper clamping plate; the upper part of the lower clamping plate is arranged downwards, and is a concave groove when viewed from the front; the lower part of the lower splint is arranged in a hollowed-out way which is concave upwards, and the lower splint is shaped like a Pi when seen from the side.

4. The tab welding jig apparatus as claimed in claim 1, wherein the guide post is installed in the second installation hole corresponding to the first installation hole of the upper plate.

5. The tab welding fixture device of claim 1, wherein the soft-packaged bare cell of the tab to be welded is placed in the concave groove of the lower clamping plate; and the upper clamping plate and the lower clamping plate are suitable for soft package batteries with different models.

6. The tab welding jig apparatus as claimed in claim 1, wherein the first and second snaps are double snap snaps.

7. The tab welding jig apparatus as claimed in claim 1, 2 or 3, wherein the upper and lower clamping plates are coated with an insulating coating.

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