CN210848775U - Ultrasonic welding welding positioning tool for battery cover plate connecting piece and battery pole group tab - Google Patents

Abstract

The utility model discloses an ultrasonic welding positioning tool for a battery cover plate connecting piece and a battery pole group tab, which comprises a base; a vertically distributed cover plate bracket is fixedly arranged at the middle position of the top of the base; the top of the cover plate bracket) , the battery cover positioning brackets distributed longitudinally are clamped; the top surface of the battery cover positioning bracket is used to place the battery cover, and the top of the battery cover has two battery cover connecting pieces that need to be welded; the battery cover positioning The right side of the bracket is fixedly connected to the left side of the welding seat holder; the right side of the welding seat holder is fixedly connected to the pole group positioning bracket; the top surface of the pole group positioning bracket is used to place the battery pole group that needs to be welded. ; There is a welding base exposure hole in the welding base fixing frame; the base is located directly below the welding base exposure hole, and the ultrasonic welding base is fixedly installed. The utility model can ensure the welding firmness of the cover plate connecting piece in the large-capacity lithium ion battery and the pole ear of the battery pole group, and ensure the safe use of the battery.

Description

Ultrasonic welding welding positioning tool for battery cover plate connecting piece and battery pole group tab

technical field

The utility model relates to the technical field of batteries, in particular to an ultrasonic welding and welding positioning tool for a connecting piece of a battery cover plate and a pole lug of a battery pole group.

Background technique

At present, lithium-ion batteries have the advantages of high specific energy, many cycles, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras and laptop computers, but also widely used in electric vehicles and electric bicycles. As well as large and medium-sized electric equipment such as power tools.

With the worldwide energy crisis and climate warming, a new energy model is urgently needed in the field of transportation, and lithium-ion batteries have attracted extensive attention in the field of transportation due to their green environmental protection, high energy output and other characteristics. , Relevant industries around the world have carried out extensive research on the application of lithium-ion batteries in this field. With the maturity and perfection of electric vehicle technology, the dream of electric vehicles and hybrid vehicles entering daily life has become possible, and huge business opportunities have been bred in the process of popularization of electric vehicles. The performance of the on-board large-capacity power battery directly affects the overall performance of the electric vehicle. This puts forward higher requirements for the on-board power battery of electric vehicles (such as higher safety, better performance, and lighter weight).

At present, the reliability and safety of the battery are also a technical difficulty and focus in the production process of large-capacity power batteries, especially the welding connectivity and connection strength of the battery tabs during the production and welding process, which all affect the performance of the battery itself. The consistency and firmness of the welding position directly affect the performance of the battery itself (including internal resistance and capacity). Now large-capacity batteries have stricter requirements for the welding of the battery poles. If the battery capacity is high, the poles and poles will be heated due to poor welding (i.e. virtual welding) when the battery is charged and discharged at a high rate, which will cause heat to the poles. The battery poses a great safety hazard. Long-term use will also lead to the degradation of battery performance and cycle life, increase the internal resistance, affect the performance of various parameters of the lithium battery, and eventually lead to the battery can not continue to be used. sex.

Therefore, there is an urgent need to develop a device, which can greatly improve the efficiency and quality of the welding assembly of the large-capacity power battery pole lugs, and ensure the welding firmness of the cover plate connecting piece and the battery pole lugs in the large-capacity lithium-ion battery. .

Utility model content

The purpose of the utility model is to provide an ultrasonic welding positioning tool for the connection piece of the power battery cover plate and the pole lug of the battery pole group, aiming at the technical defects existing in the prior art.

To this end, the utility model provides an ultrasonic welding positioning tool for the connection piece of the battery cover plate and the pole ear of the battery pole group, including a base;

The top middle position of the base is fixed with vertically distributed cover plate brackets;

The top of the cover plate bracket is clamped with longitudinally distributed battery cover plate positioning brackets;

The top surface of the battery cover plate positioning bracket is used to place the battery cover plate, and the top of the battery cover plate has two battery cover plate connecting pieces that need to be welded;

The right side of the battery cover positioning bracket is fixedly connected to the left side of a welding seat holder;

The right side of the welding seat holder is fixedly connected to the pole group positioning bracket;

The top surface of the pole group positioning support plate is used to place the battery pole group that needs to be welded;

There is a welding base exposure hole in the welding base fixing frame;

The base is fixedly installed with the ultrasonic welding base at the position just below the exposed hole of the welding base.

The top of the battery cover plate positioning bracket has longitudinally distributed grooves, and the shape and size of the grooves correspond to the shape and size of the bottom of the battery cover plate.

Among them, the front and rear sides and the middle of the pole group positioning support plate are respectively provided with a positioning adjustment hole;

Just below each positioning adjustment hole, a fixed adjustment bracket is arranged.

It can be seen from the above technical solutions provided by the present utility model that, compared with the prior art, the present utility model provides an ultrasonic welding positioning tool for the connection piece of the power battery cover plate and the pole lug of the battery pole group, which can greatly improve the large capacity. The efficiency and quality of the welding assembly of the power battery pole tabs ensure the welding firmness of the cover plate connecting piece and the battery pole tabs in the large-capacity lithium-ion battery, so as to maintain the normal resistance value of the battery and the consistency of the battery welding, ensure Lithium-ion batteries are safe to use and greatly prolong the service life of batteries, which is conducive to simplifying the welding process of batteries, reducing battery production costs, improving battery assembly quality, ensuring long-term normal use of batteries, and effectively improving product market competition. It is beneficial to be widely used in production and has great practical significance in production.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the ultrasonic welding positioning tool of the battery cover plate connecting piece and the battery pole group tab provided by the utility model;

2 is a schematic three-dimensional structure diagram of the base in the ultrasonic welding positioning tool for the connection piece of the battery cover plate and the tab of the battery pole group provided by the utility model;

3 is a schematic three-dimensional structural diagram of a cover plate bracket in an ultrasonic welding positioning tool for a battery cover plate connecting piece and a battery pole group tab provided by the present invention;

4 is a schematic three-dimensional structural diagram of a battery cover plate positioning bracket in an ultrasonic welding positioning tool for a battery cover plate connecting piece and a battery pole group tab provided by the present invention;

5 is a schematic three-dimensional structural diagram of a pole group positioning support plate in an ultrasonic welding positioning tool for a battery cover plate connecting piece and a battery pole group pole lug provided by the present invention;

6 is a schematic three-dimensional structural diagram of a fixed adjustment bracket in an ultrasonic welding positioning tool for a battery cover plate connecting piece and a battery pole group tab provided by the present invention;

7 is a top-view structural schematic diagram of a battery cover plate connecting piece that needs to be welded to the ultrasonic welding positioning tool for the battery cover plate connecting piece and the battery pole group tab provided by the utility model;

8 is a schematic top-view structural diagram of a battery pole group with tabs that needs to be welded by the ultrasonic welding positioning tool for the battery cover plate connecting piece and the battery pole group tabs provided by the utility model;

9 is a schematic top view of the connection structure when the battery cover plate connecting piece and the battery electrode group with tabs are welded after the cooperation of the present invention;

In the figure: 1 is the base, 2 is the cover bracket, 3 is the battery cover positioning bracket, 4 is the welding seat holder, and 5 is the pole group positioning bracket;

6 is the fixed adjustment bracket, 7 is the ultrasonic welding welding base, and 40 is the welding base exposure hole;

20 is a battery cover plate, 10 is a connecting piece of the battery cover plate, 30 is a battery pole group, and 31 is a pole lug.

Detailed ways

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 to FIG. 9 , the utility model provides an ultrasonic welding positioning tool for the connection piece of the battery cover plate and the tab of the battery pole group, including a base 1;

The top middle position of the base 1 is fixedly provided (specifically connected by screws) vertically distributed cover plate brackets 2;

The top of the cover plate bracket 2 is clamped with longitudinally distributed battery cover plate positioning brackets 3;

The top surface of the battery cover plate positioning bracket 3 is used to place the battery cover plate 20, and the top of the battery cover plate 20 has two battery cover plate connecting pieces 10 that need to be welded (the battery cover plate connecting pieces are located on the battery cover plate 20, It can be integrally formed with the battery cover 20 or pre-welded together, and it is a conductive connecting piece);

The right side of the battery cover positioning bracket 3 is fixedly connected (for example, welded or plugged) to the left side of a welding seat holder 4;

The right side of the welding seat holder 4 is fixedly connected to the pole group positioning support plate 5;

The top surface of the pole group positioning support plate 5 is used to place the battery pole group 30 that needs to be welded with the pole ears 31;

The welding base fixing frame 4 is provided with a welding base exposing hole 40;

The base 1 is fixedly installed with an ultrasonic welding base 7 at a position directly below the welding base exposure hole 40 .

It should be noted that, through the present invention, the battery cover plate 20 and the battery cover plate connecting piece 10 on the battery cover plate 20 and the battery cover plate connecting piece 10 on the battery cover plate can be positioned, as well as the positioning of the battery pole group 30 with the pole lugs (through the pole group positioning support plate 5) Therefore, at this time, ultrasonic welding can be performed on the connection position between the connecting piece of the battery cover plate and the tab of the battery pole group by using the ultrasonic welding head (ie, the ultrasonic welding head) of the existing ultrasonic welding equipment.

In the present invention, in terms of specific implementation, the top middle and right ends of the battery cover positioning bracket 3 have longitudinally distributed grooves 301. The shape and size of the grooves 301 correspond to the shape and size of the bottom of the battery cover 20. Insert the bottom of the battery cover 20 into a snap connection.

In the present invention, in terms of specific implementation, the front and rear sides and the middle of the pole group positioning support plate 5 are respectively provided with a positioning adjustment hole 50;

Just below each positioning adjustment hole 50, a fixed adjustment bracket 6 is provided.

It should be noted that, for the present invention, the pole group positioning support plate 5 and the positioning adjustment hole 50 in the middle position can conveniently perform welding positioning for battery pole groups of various sizes.

It should be noted that, for the utility model, the function of the welding seat fixing frame 4 is to fix the ultrasonic welding welding base 7 by screwing on both sides.

Among them, the ultrasonic welding base 7 is the overall structure of the tooling, and is used for assembling and using with other components.

In the present invention, the size of the pole group positioning support plate 5 is equal to the size of the pole group to be welded, so the position of the pole group can be positioned.

In the present invention, in addition, a cylindrical positioning block of a corresponding size can be inserted into the positioning adjustment hole 50 to realize the position limitation of the battery pole groups of different sizes. The positioning adjustment holes 50 are long holes distributed laterally, and can be fine-tuned laterally and leftwardly.

Based on the above technical solutions, it can be known that the structure design of the utility model is scientific and reasonable, easy to operate, low in processing cost, and convenient for large-scale popularization. Through the putting into use of the new tooling structure, the precise positioning of the battery welding, the simplified welding process, and the improved battery welding quality are achieved.

The utility model can realize the positioning of the pole lug of the battery pole group and the connecting piece of the battery cover plate. The pole group tabs and the cover plate connecting piece are positioned and welded by ultrasonic welding, and the pole group tabs and the battery cover plate are on a plane and matched for welding.

Based on the above technical solutions, the utility model can realize the precise welding positioning of the cover plate and the pole group, prevent the welding dislocation, weak welding and other problems due to inaccurate positioning during the welding process, and ensure the welding quality of the pole group. Consistency also improves battery operability and continuity on the basis of ensuring battery safety.

To sum up, compared with the prior art, the ultrasonic welding positioning tool for the connection piece of the battery cover plate and the tab of the battery pole group provided by the present invention can greatly improve the welding and assembly of the pole ear of the large-capacity power battery. Efficiency and quality, to ensure the welding firmness of the cover plate connection piece and the battery pole tab in the large-capacity lithium-ion battery, so as to maintain the normal resistance of the battery and the consistency of the battery welding, ensure the safe use of the lithium-ion battery, and greatly extend the The service life of the battery is conducive to simplifying the welding process of the battery, reducing the production cost of the battery, improving the assembly quality of the battery, ensuring the normal use of the battery for a long time, and effectively improving the market competitiveness of the product, which is conducive to widespread use in production. It has great practical significance for production.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (3)

1. The ultrasonic welding positioning tool for the battery cover plate connecting sheet and the battery pole group pole lug is characterized by comprising a base (1);

a cover plate bracket (2) which is vertically distributed is fixedly arranged at the middle position of the top of the base (1);

the top of the cover plate bracket (2) is clamped with battery cover plate positioning supports (3) which are longitudinally distributed;

the top surface of the battery cover plate positioning support (3) is used for placing a battery cover plate (20), and the top of the battery cover plate (20) is provided with two battery cover plate connecting sheets (10) needing to be welded;

the right side surface of the battery cover plate positioning support (3) is fixedly connected with the left side of a welding seat fixing frame (4);

the right side of the welding seat fixing frame (4) is fixedly connected with a pole group positioning supporting plate (5);

the top surface of the pole group positioning supporting plate (5) is used for placing a battery pole group (30) needing to be welded with a pole lug;

a welding base exposure hole (40) is formed in the welding base fixing frame (4);

the base (1) is fixedly provided with an ultrasonic welding base (7) at a position right below the welding base exposure hole (40).

2. The ultrasonic welding positioning tool according to claim 1, wherein the top of the battery cover plate positioning support (3) is provided with longitudinally distributed grooves (301), and the shape and size of the grooves (301) are correspondingly matched with the shape and size of the bottom of the battery cover plate (20).

3. The ultrasonic welding positioning tool according to claim 1, wherein the front side, the rear side and the middle part of the pole group positioning support plate (5) are respectively provided with a positioning adjusting hole (50);

a fixed adjusting bracket (6) is arranged right below each positioning adjusting hole (50).

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