CN220659619U - Battery welding dust removal hold-down mechanism - Google Patents

Abstract

The utility model discloses a battery welding dust removal pressing mechanism, and relates to the technical field of battery welding dust removal. The device comprises a substrate, wherein an air supply piece is arranged on one side of the substrate and is used for introducing air, a guide piece is arranged on the air supply piece, a first annular air passage is arranged in the guide piece, a plurality of guide grooves are formed in the guide piece in a surrounding mode around the first annular air passage, a compression bar assembly is slidably arranged in each guide groove, the tail end of each compression bar assembly penetrates out of the guide groove, and the tail ends of the compression bar assemblies are enclosed into a sealed cylindrical structure; the first annular air passage is respectively communicated with the air supply piece and the guide groove, and air introduced by the air supply piece reaches the guide groove through the first annular air passage. The utility model adopts the pneumatic elastic mechanism, can well ensure that good sealing is still kept when the pneumatic elastic mechanism is contacted with the uneven non-planar contact surface, forms an effective airtight negative pressure space, ensures the dust removal effect, effectively avoids crush injury and improves the laser welding yield.

Description

Battery welding dust removal hold-down mechanism

Technical Field

The utility model belongs to the technical field of battery welding dust removal, and particularly relates to a battery welding dust removal pressing mechanism.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

With the continuous popularization of electric automobiles and the rapid development of energy storage industry, the application of lithium ion batteries is becoming wider and wider. In the production link of the large-cylinder lithium ion battery, the laser welding rate of the battery core assembly section becomes a key problem of high-speed stable mass production of the battery.

The inventors have found that determinants of laser welding efficiency include: laser body, welding target object, frock clamp and dust removal frock. Especially, the dust removal tool becomes a primary constraint factor of welding yield. The dust removing tool is required to realize negative pressure dust collection, isolate dust from other areas of products, compress welding materials and ensure that nitrogen in a narrow area protects the environment from being damaged in an extremely narrow range of a welding line area. It is common practice in the current market to use a sealed sheet metal or machined suction nozzle to compress the periphery of a welding area, but when the welding area is extremely narrow, the suction nozzle is extremely narrow, negative pressure circulation is not smooth, parts are machined very thinly and are easy to damage, and products are easy to damage, so that the method cannot be used.

Disclosure of Invention

The utility model aims to provide a battery welding dust removal pressing mechanism, which adopts a pneumatic elastic mechanism, can well ensure that good sealing is still kept when the battery welding dust removal pressing mechanism is contacted with a non-planar contact surface with uneven height, forms an effective airtight negative pressure space, is convenient for coping with the fluctuation postures of different products, ensures the dust removal effect, effectively avoids crush injury, effectively avoids battery damage, improves the laser welding yield, and solves the problems in the prior art.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a battery welding dust removal pressing mechanism, which comprises a base plate, wherein an air supply piece is arranged on one side of the base plate and used for introducing air, a guide piece is arranged on the air supply piece, a first annular air passage is arranged in the guide piece, a plurality of guide grooves are formed in the guide piece in a surrounding mode, each guide groove is internally provided with a compression bar assembly in a sliding mode, the tail end of each compression bar assembly penetrates out of the guide groove, and the tail ends of the compression bar assemblies are enclosed into a closed cylindrical structure; the first annular air passage is respectively communicated with the air supply piece and the guide groove, and air introduced by the air supply piece reaches the guide groove through the first annular air passage.

Preferably, the compression bar assembly comprises a limiting part, a guide bar and an execution bar, wherein the guide bar is arranged between the limiting part and the execution bar, the execution bar is arranged outside the guide groove, the limiting part is in sliding connection with the guide groove, and the guide bar is limited with the guide groove through the limiting part.

Preferably, the shape of the limiting piece is a flat cylinder, the shape of the guide rod is a long cylinder, and the section size of the guide rod is smaller than that of the limiting piece.

Preferably, the bottom of guide way is provided with spacing ring, spacing ring central point puts and is provided with the centre bore, the size of centre bore is less than the size of locating part, just the size of centre bore is greater than the size of guide bar.

Preferably, the actuating rod is in a strip shape, oblique wedges are respectively arranged on two sides of the actuating rod, and the oblique wedges of adjacent actuating rods are mutually matched to form a sealing structure.

Preferably, the air supply piece is provided with an air supply connector, the air supply connector is connected with an external air source, a second annular air passage is arranged in the air supply piece, and the position of the second annular air passage corresponds to that of the first annular air passage.

Preferably, the second annular air passage and the first annular air passage are matched in size.

Preferably, the air supply connector is in threaded connection with the air supply piece.

Preferably, the base plate is connected with the air supply piece and the guide piece through screws.

Preferably, the air supply member and the guide member are both annular.

The utility model has the following beneficial effects:

1. the utility model provides a battery welding dust removal hold-down mechanism, which is characterized in that a first annular air passage, a second annular air passage and a guide groove are arranged, external gas is introduced into the guide groove through the first annular air passage and the second annular air passage, and then a guide rod in the guide groove is pushed by the gas to drive an actuating rod to move outwards, so that the tail end of the actuating rod can be well matched with a to-be-welded part under the action of air pressure, the sealing effect is kept, and the pneumatic elastic mechanism still keeps good sealing when the pneumatic elastic mechanism is contacted with a non-planar contact surface with uneven height, so that an effective airtight negative pressure space is formed, and the welding yield is ensured.

2. The utility model is convenient for coping with the fluctuation gesture of different products, ensures the dust removal effect of various products and has universality.

3. The utility model realizes the compression of the welding dust removal compressing mechanism and the welding target object by utilizing the pneumatic elasticity mode of compressed air, improves the control of the compressing force, and can control the fluctuation of the target object, thereby effectively avoiding the damage of the compression and the battery and ensuring the welding quality while improving the sealing effect.

4. The actuating rod of the compression bar assembly is locked in a multi-point oblique wedge mode, so that the closing of a closed space is improved, the diffusion of dust and gas is effectively prevented, and a welding target is prevented from being polluted.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is an exploded view of the overall structure of the present utility model;

FIG. 3 is a schematic elevational view of the present utility model;

FIG. 4 is a schematic view of the cross-sectional structure of the present utility model taken along the AA direction in FIG. 3;

FIG. 5 is a schematic view of the sectional structure of the present utility model taken along the BB direction in FIG. 3;

FIG. 6 is a schematic view of a plurality of compression bar assemblies of the present utility model enclosed as a closed cylindrical structure;

FIG. 7 is a schematic view of a single plunger assembly of the present utility model;

FIG. 8 is a schematic diagram of a target weld of the present utility model;

FIG. 9 is a schematic diagram of a use scenario of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1 base plate, 2 air feed piece, 3 guide piece, 4 first annular air flue, 5 depression bar subassembly, 6 locating part, 7 guide bar, 8 actuating lever, 9 oblique wedge, 10 air feed joint, 11 second annular air flue, 12 screwed connection department, 13 screws, 14 roll up the core, 15 apron, 16 positive connection piece, 17 negative pole connection piece, 18 galvanometer laser head, 19 battery welding dust removal hold-down mechanism, 20 apron laser welding electric core subassembly.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model is characterized in that:

the battery cover plate welding dust removing tool is required to realize negative pressure dust collection, isolate dust from other areas of products and compress welding materials in a narrow welding line area, and ensure that nitrogen in the narrow welding line area protects the environment from being damaged. In the current market, a sealed sheet metal or a mechanically-added suction nozzle is adopted to compress the periphery of a welding area; however, when the welding area is extremely narrow, the negative pressure circulation is not smooth due to the extreme constraint of the suction nozzle, and the part processing is extremely thinned and easy to damage, and the product is easy to damage, so that the suction nozzle cannot be used. Based on the problems, the utility model provides a novel welding dust removal compacting mechanism, and a pneumatic elastic mechanism is adopted, so that the pressure injury is effectively avoided, and the dust removal effect is ensured; the utility model can effectively avoid battery damage and improve the yield of laser welding.

Embodiment one:

referring to fig. 1-9, the utility model discloses a dust removing and compressing mechanism 19 for battery welding, which comprises a base plate 1, wherein an air supply piece 2 is arranged at one side of the base plate 1, the air supply piece 2 is used for introducing air, a guide piece 3 is arranged on the air supply piece 2, a first annular air passage 4 is arranged in the guide piece 3, a plurality of guide grooves are formed in the guide piece 3 in a surrounding manner around the first annular air passage 4, a compression bar assembly 5 is slidably arranged in each guide groove, the tail end of the compression bar assembly 5 penetrates out of the guide groove, and the tail ends of the compression bar assemblies 5 are enclosed into a sealed cylindrical structure; the first annular air passage 4 is respectively communicated with the air supply piece 2 and the guide groove, and air introduced by the air supply piece 2 reaches the guide groove through the first annular air passage 4.

As shown in fig. 4, each guide groove is communicated with the first annular air passage 4, so that gas is introduced into the guide groove through the gas supply piece 2 and the first annular air passage 4, and the gas is utilized to push the compression bar assembly 5 to slide in the guide groove, so that the contact surface of the target to be welded at the tail end of the compression bar assembly 5 is sealed. According to the embodiment, the pneumatic elastic mode of compressed air is utilized, so that the welding dust removal pressing mechanism component and a welding target are pressed, the pressing force control is improved, the tail ends of the plurality of pressing rod components 5 can be better attached to the target in a fluctuant mode, and the sealing effect is improved.

Further, the structure of the compression bar assembly 5 is specifically:

the compression bar assembly 5 comprises a limiting part 6, a guide bar 7 and an actuating bar 8, wherein the guide bar 7 is arranged between the limiting part 6 and the actuating bar 8, the actuating bar 8 is arranged outside the guide groove, sliding connection is adopted between the limiting part 6 and the guide groove and between the guide bar 7 and the guide groove, and the guide bar 7 and the guide groove are limited through the limiting part 6.

As shown in fig. 2, 6 and 7, the limiting member 6 is in a flat cylindrical shape, the guide rod 7 is in a long cylindrical shape, and the cross-sectional dimension of the guide rod 7 is smaller than the cross-sectional dimension of the limiting member 6.

In order to realize the spacing to guide bar 7, prevent that guide bar 7 from deviating from when sliding in the guide way, set up locating part 6 in the one end of guide bar 7, the bottom of guide way is provided with spacing ring, spacing ring central point puts and is provided with the centre bore, the size of centre bore is less than the size of locating part 6, just the size of centre bore is greater than the size of guide bar 7. Therefore, the guide rod 7 can be limited by the limiting piece 6 and the size of the center hole, and the guide rod 7 is prevented from falling out of the guide groove.

In order to further achieve a better sealing effect, the actuating rod 8 is in a strip shape, inclined wedges 9 are respectively arranged on two sides of the actuating rod 8, and the inclined wedges 9 of adjacent actuating rods 8 are mutually matched to form a sealing structure. The actuating rod 8 is locked in a multi-point inclined wedge 9 mode, so that the closing of a closed space is improved, dust diffusion is effectively prevented, and welding targets are prevented from being polluted.

As shown in fig. 1 and 2, the air supply member 2 and the guide member 3 are both circular and are adapted in size to each other.

Further, the air supply piece 2 is provided with an air supply connector 10, the air supply connector 10 is connected with an external air source, a second annular air passage 11 is arranged in the air supply piece 2, as shown in fig. 4 and 5, the position of the second annular air passage 11 corresponds to that of the first annular air passage 4, and the sizes of the second annular air passage 11 and the first annular air passage 4 are matched. In this way, the gas can be better utilized to push the actuating rod 8, and the contact surface of the target to be welded can be sealed.

As shown in fig. 2, the air supply member 2 is provided with a threaded connection portion 12, the threaded connection portion 12 is provided with an internal thread, the air supply connector 10 is provided with an external thread, the internal thread and the external thread are mutually matched for use, the threaded connection between the air supply connector 10 and the air supply member 2 is realized, and the connection with an external air source is realized through the air supply connector 10.

As shown in fig. 5, the base plate 1 is connected with the air supply member 2 and the guide member 3 through screws 13, and the screws 13 penetrate through the base plate 1 and the air supply member 2 and are fixed with the guide member 3.

A plurality of threaded holes are formed in the base plate 1, the base plate 1 is connected to an external lifting mechanism through the threaded holes, and the overall operation height of the battery welding dust removal pressing mechanism 19 is conveniently adjusted.

As shown in fig. 8 and 9, the working product for the battery welding dust removing and pressing mechanism 19 in the present embodiment is the cover plate 15 laser welding of the battery cell assembly 20.

The cover plate 15 laser welding cell assembly 20 structurally comprises a winding core 14, a cover plate 15, a positive electrode connecting sheet 16 and a negative electrode connecting sheet 17. The battery welding dust removal hold-down mechanism 19 described in this embodiment is applied to a cover plate 15 laser welding system, which includes a cover plate 15 laser welding cell assembly 20, a welding dust removal hold-down mechanism, and a galvanometer laser head 18. The welding dust removal hold-down mechanism comprises a base plate 1, an air supply piece 2, a guide piece 3, a compression bar assembly 5 and an air supply joint 10. The compression bar assembly 5 comprises an actuating bar 8 and a guide bar 7.

When the cover plate 15 is assembled by the laser welding cell assembly 20, firstly, the cover plate 15 is placed in place, and then, the butterfly-welded roll core 14 assembly formed by the positive electrode connecting sheet 16, the negative electrode connecting sheet 17 and the roll core 14 is placed; finally, starting a welding dust removing and compressing mechanism to respectively and sequentially compress the welding areas of the positive electrode connecting sheet 16 and the negative electrode connecting sheet 17 twice, or simultaneously compressing the welding areas of the positive electrode connecting sheet 16 and the negative electrode connecting sheet 17 by two sleeved dust removing and compressing mechanisms; and starting the galvanometer laser head 18 to perform continuous welding, and respectively welding the positive electrode connecting sheet 16 and the negative electrode connecting sheet 17 onto the cover plate 15.

When in use, the welding dust-removing pressing mechanism is connected to the welding equipment dust-removing pressing lifting mechanism through the base plate 1; the air supply part 2 obtains compressed air through the air supply connector 10, transmits the compressed air to the guide part 3, pushes the guide rods 7 of the pressure rod assemblies 5, and presses the actuating rod 8 to the positive electrode connecting sheet 16, the negative electrode connecting sheet 17 and the winding core 14 of the cover plate 15 laser welding cell assembly 20, so that the pneumatic elasticity effect is achieved. In the use process, the battery welding dust removal pressing mechanism 19 of the embodiment not only can form an effective airtight negative pressure space, but also can form a fluctuation gesture of a product; effectively isolate dust diffusion to can compress tightly apron 15 and positive electrode connection piece 16, negative electrode connection piece 17 that need welded, improve welding yield and dust removal effect.

As shown in fig. 4, the pneumatic elastic effect of the welding dust removing and compressing mechanism is specifically that the air supply joint 10 of the welding dust removing and compressing mechanism is externally connected with compressed air and is connected to the second annular air passage 11 of the air supply piece 2; the second annular air passage 11 is butted to the first annular air passage 4 of the guide piece 3, and the guide piece 3 is provided with a guide groove for sliding the guide rod 7; the compressed air acts on the large surface end of the guide rod 7 through the air passage to push the guide rod 7 to slide in the guide groove of the guide piece 3, so as to push the execution rod 8 to move; the actuating rods 8 are locked in the form of inclined wedges 9 to form a closed space, so that an environment is effectively closed.

As shown in fig. 5, the connection mode of the welding dust removing and compressing mechanism is specifically that the base plate 1 is used as an outer connecting piece of the welding dust removing and compressing mechanism, and a screw is locked on the guide piece 3 through the base plate 1 and the air supply piece 2; the compression bar component 5 of the welding dust-removing compression mechanism is arranged in a guide groove of the guide piece 32 of the welding dust-removing compression mechanism through the guide bar 7; the welding dust removal hold-down mechanism air feed connector 10 is connected to the air feed member 2 by the air feed connector 10 screw.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (10)

1. The battery welding dust removal hold-down mechanism is characterized by comprising a base plate, wherein an air supply piece is arranged on one side of the base plate and used for introducing air, a guide piece is arranged on the air supply piece, a first annular air passage is arranged in the guide piece, a plurality of guide grooves are formed in the guide piece in a surrounding mode, each guide groove is internally provided with a compression bar assembly in a sliding mode, the tail end of each compression bar assembly penetrates out of the guide groove, and the tail ends of the compression bar assemblies are enclosed into a sealed cylindrical structure; the first annular air passage is respectively communicated with the air supply piece and the guide groove, and air introduced by the air supply piece reaches the guide groove through the first annular air passage.

2. The battery welding dust removal hold-down mechanism of claim 1, wherein the compression bar assembly comprises a limiting piece, a guide bar and an actuating bar, the guide bar is arranged between the limiting piece and the actuating bar, the actuating bar is arranged outside the guide groove, the limiting piece is in sliding connection with the guide groove, the guide bar is in sliding connection with the guide groove, and the guide bar is limited with the guide groove through the limiting piece.

3. The battery welding dust removal hold-down mechanism of claim 2, wherein the shape of the limiting member is a flat cylinder, the shape of the guide rod is a long cylinder, and the cross-sectional dimension of the guide rod is smaller than the cross-sectional dimension of the limiting member.

4. The battery welding dust removal hold-down mechanism of claim 3, wherein a limiting ring is arranged at the bottom of the guide groove, a central hole is arranged at the central position of the limiting ring, the size of the central hole is smaller than that of the limiting piece, and the size of the central hole is larger than that of the guide rod.

5. The battery welding dust removal hold-down mechanism of claim 2, wherein the actuating rod is in a strip shape, inclined wedges are respectively arranged on two sides of the actuating rod, and the inclined wedges of adjacent actuating rods are mutually matched to form a sealing structure.

6. The battery welding dust removal hold-down mechanism of claim 1, wherein an air supply connector is arranged on the air supply piece, the air supply connector is connected with an external air source, a second annular air passage is arranged in the air supply piece, and the position of the second annular air passage corresponds to the position of the first annular air passage.

7. The battery weld dust extraction hold-down mechanism of claim 6, wherein the second annular air channel and the first annular air channel are sized to fit.

8. The battery welding dust removal hold down mechanism of claim 6, wherein the air supply connection is threaded with the air supply member.

9. The battery welding dust removal hold-down mechanism of claim 1, wherein the base plate is connected with the air supply member and the guide member by screws.

10. The battery welding dust removal hold-down mechanism of claim 1, wherein the air supply and guide are both annular.