CN219725068U

CN219725068U - Welding auxiliary fixtures

Info

Publication number: CN219725068U
Application number: CN202320742210.2U
Authority: CN
Inventors: 夏来来; 党扬扬; 江国龙; 肖良禄; 张海阳
Original assignee: China Innovation Aviation Technology Group Co ltd
Current assignee: China Innovation Aviation Technology Group Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-09-22
Anticipated expiration: 2033-04-06

Abstract

The utility model provides a welding auxiliary tool, which comprises a mounting piece, a welding auxiliary tool and a welding auxiliary tool, wherein the mounting piece is used for being connected to processing equipment; the connecting piece is arranged on the mounting piece; the clamping assembly is connected with the connecting piece and is provided with a clamping space for accommodating the pole and the electric connecting device, and the clamping space is provided with a positioning surface for being attached to the pole or the electric connecting device; the clamping piece is provided with a clamping part which slides relative to the clamping assembly and can be locked relative to the clamping assembly, and the clamping part slides relative to the clamping assembly along a direction which is close to or far away from the positioning surface and is perpendicular to the positioning surface. In the technical scheme, the problem that the clamping force applied to the pole and the electric connecting device is too large or too small is not easy to occur, the deformation damage of the pole is reduced, or the problem of cold joint exists between the pole and the electric connecting device, and the welding quality of the pole and the electric connecting device is improved.

Description

Welding auxiliary fixtures

Technical Field

The utility model relates to the field of battery production, in particular to a welding auxiliary tool.

Background

In the battery manufacturing process, a plurality of single batteries are required to be connected through structures such as conducting strips, bus bars and the like so as to form a battery pack, when the conducting strips and the pole are welded, the welding gaps between the conducting strips and the pole are required to be ensured to meet the process standard, and the conducting strips and the pole are positioned in a manner of pressing down a copper sleeve.

Referring to fig. 1, there is shown a battery structure in which a plurality of unit cells 1 are arranged side by side on a large surface of the unit cells 1 where a pole 11 is located, and then connected by a bus bar or the like. The pole of the middle single battery has smaller bearable pressure area and smaller allowable pressing position error.

For the battery structure with smaller compressible area and smaller allowable pressing position error of the pole, if the traditional copper sleeve pressing mode is adopted, the state of the pole is difficult to effectively monitor because the copper sleeve is pressed down to be of a closed structure, and the pole is likely to be bent and deformed or even fall off in the welding process, or the problem of overlarge gap between the pole and the conducting strip is caused, so that the welding quality is reduced.

Disclosure of Invention

The utility model provides a welding auxiliary tool which provides proper clamping force for a pole and a conducting strip, reduces the problems of cold joint or pole damage and improves welding quality.

The utility model provides an auxiliary welding tool, which comprises,

a mount for connection to a processing apparatus;

the connecting piece is arranged on the mounting piece;

the clamping assembly is connected with the connecting piece and is provided with a clamping space for accommodating the pole and the electric connecting device, and the clamping space is provided with a positioning surface for being attached to the pole or the electric connecting device;

the clamping piece is provided with a clamping part which slides relative to the clamping assembly and can be locked relative to the clamping assembly, and the clamping part slides relative to the clamping assembly along a direction which is close to or far away from the positioning surface and is perpendicular to the positioning surface.

In a specific embodiment, the clamping assembly comprises,

the connecting block is fixedly connected with the connecting piece;

the positioning block is fixedly connected with the connecting block;

the clamping block is fixedly connected to the connecting block and is positioned on one side, away from the positioning block, of the connecting block;

the clamping space is a gap between the clamping block and the positioning block, and the positioning surface is the surface of the positioning block facing the clamping block.

In a specific embodiment, the clamping member is threadably coupled to the clamping block.

In a specific implementation manner, the clamping piece is of a linear telescopic structure and is fixedly connected to the clamping block;

the clamping part is a telescopic part of the clamping piece.

In a specific embodiment, the clamping member is an electric push rod.

In a specific embodiment, the device further comprises a pressure sensor fixed on the positioning surface, wherein the pressure sensor is used for detecting the clamping force between the pole and the electric connection device.

In a specific implementation manner, when the clamping piece is of a linear telescopic structure, the welding auxiliary tool further comprises a controller;

the controller is used for controlling the clamping piece to lock when the clamping force detected by the pressure sensor reaches a set value.

In a specific embodiment, the number of the connecting pieces is plural, and the connecting pieces are detachably fixed to the mounting piece;

the number of the clamping assemblies is multiple, and the clamping assemblies are in one-to-one correspondence with the connecting pieces.

In a specific embodiment, the number of the connecting pieces is a plurality, and the connecting pieces are slidably connected with the mounting piece and are locked relative to the mounting piece;

In a specific embodiment, the connector comprises a connecting post and a cross bar, and the clamping assembly is arranged on the connecting post;

the cross rod is fixedly connected to one end, away from the clamping assembly, of the connecting column;

the mounting piece is provided with a sliding groove, and the cross rod is positioned in the sliding groove and is limited to be separated from the mounting piece along the length direction of the connecting column;

the welding auxiliary tool further comprises a locking piece used for locking the cross rod and the mounting piece.

In the technical scheme, clamping assembly and clamping piece through setting up press from both sides tightly fixedly to utmost point post and electric connection device, can adjust the clamping force between utmost point post and the electric connection device through the gliding position adjustment of clamping piece, the too big or too little problem of clamping force that is difficult to appear applys utmost point post and electric connection device reduces utmost point post deformation damage, perhaps has the problem of rosin joint between utmost point post and the electric connection device, promotes utmost point post and electric connection device's welding quality.

Drawings

Fig. 1 is a structure of a battery in the related art;

fig. 2 is a schematic connection diagram of a welding auxiliary tool and a single battery provided by an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a welding auxiliary tool according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of connection relationship of a controller according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a single battery; 11. a pole; 2. a conductive sheet; 3. a mounting member; 31. a chute; 4. a connecting piece; 41. a connecting column; 42. a cross bar; 5. a clamping assembly; 51. a connecting block; 52. a positioning block; 53. a clamping block; 6. a clamping member; 7. a locking member; 8. a pressure sensor; 9. and a controller.

Detailed Description

The utility model is further described in detail below by means of the figures and examples. The features and advantages of the present utility model will become more apparent from the description.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present utility model may be combined with each other as long as they do not collide with each other.

In order to facilitate understanding of the welding auxiliary tool provided by the embodiment of the utility model, an application scene of the welding auxiliary tool is introduced first. The auxiliary welding tool provided by the embodiment of the utility model is mainly applied to a battery structure with a pole located on a large battery surface and a small compressible area of the pole, and referring to fig. 1, is a single battery 1 structure, and is used for welding the poles 11 of a plurality of single batteries 1 and an electric connection device. Of course, the present utility model can be applied to a battery structure in which other poles 11 are located on a large surface and the compressible area of the poles 11 is small. The embodiment of the utility model provides a welding auxiliary tool, wherein the electric connecting device is a busbar, a conducting strip and other various common electric connecting structures in the field, and only the electric connecting device is taken as the conducting strip 2 for illustration, so that when the pole 11 and the conducting strip 2 are clamped and fixed, the problem that the clamping force is too large or too small is solved, and the welding quality of the pole 11 and the conducting strip 2 is improved. The following detailed description is made with reference to the specific drawings and examples.

Referring to fig. 2, fig. 2 shows a schematic diagram of the matching relationship between the welding auxiliary tool and the plurality of unit batteries 1. The plurality of single batteries 1 are arranged in a row, and the conducting strip 2 is used for connecting the poles 11 of two adjacent single batteries 1; the pole 11 is located on the large face of the single battery 1, the conducting strip 2 is attached to the pole 11 and is in a stacked state, the welding auxiliary tool is connected to processing equipment, and after the battery and the conducting strip 2 are located at the processing position, the pole 11 and the conducting strip 2 are fixed through the welding auxiliary tool so as to carry out subsequent welding procedures.

Referring to fig. 3, fig. 3 shows a schematic structural diagram of the welding auxiliary tool. The welding auxiliary tool comprises a mounting piece 3, a connecting piece 4, a clamping assembly 5 and a clamping piece 6, wherein the mounting frame is connected to processing equipment, and the mounting piece 3 is driven to move by power pieces such as a hydraulic cylinder and an air cylinder so as to adjust the integral position of the welding auxiliary tool, and the length direction of the mounting piece 3 is along the arrangement direction of a plurality of single batteries 1; the plurality of connection members 4 are provided, and the plurality of connection members 4 are arranged on the mounting member 3 at intervals along the length direction of the mounting member 3.

The plurality of clamping assemblies 5 are arranged, the plurality of clamping assemblies 5 are in one-to-one correspondence with the plurality of connecting pieces 4, the clamping assemblies 5 are connected to the corresponding connecting pieces 4, clamping spaces for accommodating the pole 11 and the conducting strip 2 are arranged, one side of each clamping space is a positioning surface, and the pole 11 is attached to the positioning surface in a state that the pole 11 and the conducting strip 2 are positioned in the accommodating space; the clamping pieces 6 are multiple and correspond to the clamping assemblies 5 one by one, the clamping pieces 6 are provided with clamping portions, the clamping portions slide relative to the clamping assemblies 5 and can be locked relative to the clamping assemblies 5, and the sliding direction of the clamping portions relative to the clamping assemblies 5 is a direction which is close to or far from the positioning surface and perpendicular to the positioning surface.

It should be noted that, in the embodiment of the present utility model, the sliding direction of the clamping portion is perpendicular to the positioning surface, specifically: the sliding direction of the clamping part relative to the clamping assembly has components in the direction vertical to the positioning surface, namely, the sliding direction of the clamping part relative to the clamping assembly is vertical to the positioning surface or has an inclined angle; but the inclination angle is not 0 deg., i.e. the sliding direction of the clamping portion is not parallel to the positioning surface.

When the pole 11 and the conducting strip 2 are welded, the conducting strip 2 is attached to the pole 11, and the welding auxiliary tool is moved to enable the attached part of the pole 11 and the conducting strip 2 to be located in the clamping space; at this time, the clamping piece 6 is adjusted, so that the clamping portion moves in a direction approaching to the positioning surface, the pole 11 is driven to abut against the positioning surface, the conductive sheet 2 and the pole 11 are abutted against, and the conductive sheet 2 and the pole 11 are fixed.

Through the slip distance of adjustment clamping part, press from both sides tightly fixedly to post 11 and conducting strip 2, can reduce the too big or too little problem of clamping force between post 11 and the conducting strip 2 that appears, be difficult to cause the problem that post 11 warp the damage, simultaneously, conducting strip 2 is closely with post 11, in the follow-up welding process, is difficult to appear there is the problem of rosin joint between post 11 and the conducting strip 2, promotes the welding quality of post 11 and conducting strip 2.

The mounting member 3 is an elongated cylindrical structure, however, in other embodiments, the mounting member 3 may be provided in a plate-like structure, etc., and the embodiment of the present utility model only uses the mounting member 3 as an example of a cylindrical structure, but the protection scope of the embodiment of the present utility model is not limited in sequence.

It should be noted that, in the embodiment of the present utility model, the installation member 3 is connected to the existing processing equipment, and the welding auxiliary tool is integrated to the existing processing equipment, which is only one specific implementation manner; during actual use, the mounting piece 3 can be independently arranged, and the welding auxiliary tool is used as independent equipment. The specific installation condition can be selected according to actual needs, and details are not repeated here.

Referring to fig. 3, the connecting member 4 is slidably coupled to the mounting member 3 and lockable with respect to the mounting member 3, and in particular, the connecting member 4 includes a connecting post 41 and a cross bar 42, and the cross bar 42 is fixedly coupled to an end portion of the connecting post 41, such that the connecting member 4 forms a T-shaped structure. The spout 31 has been seted up on the mounting 3, and the cross-section of spout 31 also is "T" shape, and horizontal pole 42 is located spout 31, and spliced pole 41 is worn out by the opening of spout 31, realizes the sliding connection of connecting piece 4 and mounting 3, and is difficult to appear connecting piece 4 and deviate from the condition of spout 31.

In addition, the welding auxiliary tool further comprises locking pieces 7 which are arranged in one-to-one correspondence with the plurality of connecting pieces 4, and the locking pieces 7 are locking bolts which are connected to the cross rod 42 in a threaded manner. When the connecting piece 4 is locked relative to the mounting piece 3, the locking bolt is screwed down, so that the end part of the locking bolt is tightly propped against the mounting piece 3, and the connecting piece 4 can be locked relative to the mounting piece 3, and the operation is convenient.

The plurality of connecting pieces 4 are arranged to slide relative to the mounting piece 3 and can be locked, the position of the clamping assembly 5 can be conveniently adjusted, when the battery modules of welding operation are different, the positions of the plurality of single batteries 1 are adjusted adaptively to the positions of the connecting pieces 4, and the applicability of the welding auxiliary tool is improved.

Furthermore, the mounting member 3 is provided with a communication groove which communicates with the slide groove 31 for releasing the cross bar 42 from the slide groove 31; or a chute 31 is provided in communication with the end of the mounting member 3. Can realize dismantling or the installation of connecting piece 4, comparatively conveniently adjust the quantity of connecting piece 4 on the installed part 3, adjust the quantity of clamping assembly 5 promptly, when the quantity that need carry out welding operation's monomer battery 1 is different, can be comparatively convenient carry out adaptability adjustment to the quantity of clamping assembly 5, promote the suitability of this welding auxiliary fixtures.

In other embodiments, the connecting piece 4 may be directly detachably and fixedly connected with the mounting piece 3, specifically, the connecting piece 4 may be directly detached from the mounting piece 3 and be fixed at a desired mounting position when the position of the clamping assembly 5 needs to be adjusted by means of a fixing manner such as bolting and buckling.

Referring to fig. 3, the clamping assembly 5 includes a connection block 51, a positioning block 52, and a clamping block 53, wherein the connection block 51 is fixedly connected to an end of the connection post 41 facing away from the cross bar 42; the positioning block 52 and the clamping block 53 are fixedly connected to the connecting block 51, and the positioning block 52 and the clamping block 53 are respectively located on two sides of the connecting block 51, which are away from each other. The clamping assembly 5 forms a U-shaped structure, and a clamping space is a section between the positioning block 52 and the clamping block 53 and is used for accommodating the pole 11 and the conducting strip 2; the positioning surface is the surface of the positioning block 52 facing the clamping block 53.

The clamping piece 6 is a clamping bolt, the clamping bolt is in threaded connection with the clamping block 53, the clamping part is the rod part of the clamping bolt, when the pole 11 and the conducting strip 2 are clamped and fastened, the pole 11 and the conducting strip 2 are positioned between the positioning block 52 and the clamping block 53, the clamping bolt is screwed to drive the clamping bolt to move towards the direction close to the positioning block 52, the clamping bolt is abutted to the conducting strip 2, and the pole 11 is driven to be abutted to the positioning block 52, so that the clamping and positioning of the pole 11 and the conducting strip 2 are realized.

The pole 11 and the conducting strip 2 are welded and fixed, in the process of screwing the clamping bolt, the abutting state of the conducting strip 2 and the pole 11 can be directly observed, the problems that gaps exist between the conducting strip 2 and the pole 11 and the follow-up welding has false welding are difficult to occur, and the problem that the clamping force is too large to damage the pole 11 is also difficult to occur; the clamping force between the pole 11 and the conducting strip 2 is controlled conveniently, and the welding quality of the pole 11 and the conducting strip 2 is improved.

When carrying out centre gripping location to utmost point post 11 and conducting strip 2, utmost point post 11 and conducting strip 2 all with connecting block 51 butt, can align conducting strip 2 and utmost point post 11, be favorable to promoting the welding quality of conducting strip 2 and utmost point post 11.

In another embodiment, the clamping member 6 is of a linear telescopic structure, and the clamping member 6 is a hydraulic cylinder, an air cylinder or an electric push rod, and the embodiment of the utility model is described by taking the clamping member 6 as an electric push rod as an example; the electric push rod is fixedly connected to the clamping block 53, and the clamping part is a telescopic part of the electric push rod. When the pole 11 and the conductive sheet 2 need to be clamped, the telescopic part of the electric push rod stretches out towards the direction of the positioning block 52, and the conductive sheet 2 and the pole 11 are tightly propped against the positioning block 52, so that the clamping and fixing of the pole 11 and the conductive sheet 2 are realized; the operator is not required to manually operate each clamping piece, the convenience of clamping the conductive sheet 2 and the pole 11 is improved, and the working efficiency can be improved.

Referring to fig. 3, the pressure sensor 8 is fixedly connected to the positioning block 52, and the pressure sensor 8 detects the clamping force between the pole 11 and the conductive sheet 2, so that the problem of excessive clamping force applied to the pole 11 and the conductive sheet 2 can be reduced.

In addition, referring to fig. 4, the welding auxiliary tool further includes a controller 9, and the controller 9 is in signal connection with the pressure sensor 8 to receive the pressure value detected by the pressure sensor 8. When the clamping piece 6 is a clamping bolt, an alarm connected with the controller 9 in a signal mode is further arranged, when the pressure detected by the pressure sensor 8 reaches a set value, the alarm is controlled to send out a reminding signal, and a worker can clearly know that the clamping force applied to the pole 11 and the conducting strip 2 is enough, namely the pole 11 or the conducting strip 2 is not easy to damage, and the problem that a gap exists between the pole 11 and the conducting strip 2 is not easy to occur.

When the clamping piece 6 is of a linear telescopic structure, the controller 9 is in signal connection with the clamping piece 6, and when the pressure detected by the pressure sensor 8 reaches a set value, the clamping piece 6 is controlled to be locked, the clamping force applied to the pole 11 and the conducting strip 2 can be accurately controlled, and the welding quality is improved.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc. are directions or positional relationships based on the operation state of the present utility model are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically defined and limited; in addition, a plurality of the present utility model is referred to as two or more. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the utility model can be subjected to various substitutions and improvements, and all fall within the protection scope of the utility model.

Claims

1. A welding auxiliary tool is characterized by comprising,

a mount for connection to a processing apparatus;

the connecting piece is arranged on the mounting piece;

2. The welding auxiliary tool according to claim 1, wherein the clamping assembly comprises,

the connecting block is fixedly connected with the connecting piece;

the positioning block is fixedly connected with the connecting block;

3. The welding auxiliary tool according to claim 2, wherein the clamping member is screw-connected with the clamping block.

4. The welding auxiliary tool according to claim 2, wherein the clamping member is of a linear telescopic structure and is fixedly connected to the clamping block;

the clamping part is a telescopic part of the clamping piece.

5. The welding auxiliary tool according to claim 4, wherein the clamping member is an electric push rod.

6. The welding auxiliary fixture according to any one of claims 1 to 5, further comprising a pressure sensor fixed to the positioning surface, the pressure sensor being configured to detect a clamping force between the pole and the electrical connection device.

7. The welding auxiliary tool according to claim 6, wherein when the clamping member is of a linear telescopic structure, the welding auxiliary tool further comprises a controller;

8. The welding auxiliary tool according to claim 1, wherein the number of the connecting pieces is plural, and the connecting pieces are detachably fixed to the mounting piece;

9. The welding auxiliary tool according to claim 1, wherein the number of the connecting pieces is plural, and the connecting pieces are slidably connected with the mounting pieces and locked relative to the mounting pieces;

10. The welding auxiliary tool according to claim 9, wherein the connecting piece comprises a connecting column and a cross rod, and the clamping assembly is arranged on the connecting column;