CN220407714U - Welding tool and battery production system - Google Patents

Abstract

The application relates to a welding frock and battery production system, this welding frock include bottom plate, apron and pressing mechanism. The bottom plate comprises a bearing surface; the cover plate is provided with a clamping state arranged on the bearing surface, a clamping space is formed between the cover plate and the bearing surface in the clamping state, the cover plate is provided with an opening, the clamping space is arranged around the opening, and part of the bearing surface is exposed through the opening; the pressing mechanism is located on one side, away from the bottom plate, of the cover plate and moves along the bearing surface relative to the cover plate, and the pressing mechanism comprises a pressing part capable of moving along the thickness direction of the bottom plate, and the pressing part can extend into the opening. The welding frock that this application provided compresses tightly the clamping space that forms between bottom plate and apron with waiting the weldment to can drive pressing mechanism's pushing down portion and remove to waiting each of weldment and wait the welding region, press, fix a position and slight plastic to it. Therefore, the subsequent welding process can be conveniently performed, the probability of false welding during welding is reduced, and the welding qualification rate is improved.

Description

Welding tool and battery production system

Technical Field

The application relates to the technical field of batteries, in particular to a welding tool and a battery production system.

Background

The conductive sheets such as aluminum bars are easy to slightly deform in the processing process, so that the surface of the aluminum bars is uneven, and the flatness of the conductive sheets is affected. When the aluminum bar with poor flatness is placed on the PCB and welded with the PCB, because gaps exist between some parts of the aluminum bar and the PCB, blank welding can occur between some parts of the aluminum bar and the PCB, and therefore the welding effect is affected.

Disclosure of Invention

In view of the above problems, the application provides a welding tool and a battery production system, which can improve the problem that blank welding occurs between aluminum bars and PCB plates during welding.

In a first aspect, the present application provides a welding fixture comprising a base plate, a cover plate, and a pressing mechanism. The bottom plate comprises a bearing surface; the cover plate is provided with a clamping state arranged on the bearing surface, a clamping space is formed between the cover plate and the bearing surface in the clamping state, the cover plate is provided with an opening, the clamping space is arranged around the opening, and part of the bearing surface is exposed through the opening; the pressing mechanism is located on one side, away from the bottom plate, of the cover plate and moves along the bearing surface relative to the cover plate, and the pressing mechanism comprises a pressing part capable of moving along the thickness direction of the bottom plate, and the pressing part can extend into the opening.

In the technical scheme of this embodiment, when waiting to weld the spare by compressing tightly in the centre gripping space between bottom plate and apron, but the pushing down portion of drive pressing mechanism removes each wait to weld the regional to waiting to weld the spare in proper order to compress tightly each wait to weld the regional to weld of waiting to weld the spare, with fix a position and slight plastic to it. Therefore, the subsequent welding process can be conveniently performed, the probability of false welding during welding is reduced, and the welding qualification rate is improved.

In some embodiments, the supporting surface of the bottom plate is used for supporting a first part to be welded, and the first part to be welded is limited in the clamping space and exposed by the opening; the pressing mechanism is used for pressing the second piece to be welded on the first piece to be welded through the opening; and/or the bottom plate and the cover plate are detachably connected.

When the flatness of the aluminum bar surface is poor, the uneven part of the aluminum bar surface can be pressed by the pressing part, so that the gap between the aluminum bar and the PCB is reduced, and the probability of empty welding of the aluminum bar and the PCB is reduced. In addition, can also let the solder paste fully fill during the welding, reduce the void ratio after the welding, promote the welding qualification rate of aluminium bar when promoting the excessive current temperature resistance of product.

In some embodiments, the pressing mechanism includes a pressing member and a connecting member, the connecting member is disposed on the cover plate and is movably disposed along a first direction parallel to the bearing surface, the pressing member is disposed on the connecting member and is movably disposed along a second direction intersecting the first direction, and the second direction is parallel to the bearing surface; the pressing piece comprises a pressing part.

The pressing mechanism is divided into two parts, namely the detachable pressing piece and the connecting piece, when any one of the pressing piece and the connecting piece is damaged, only one damaged part can be replaced, and the maintenance cost of the welding tool is reduced.

In some embodiments, the cover plate is provided with a guide portion extending in the first direction, and the connecting member is movably disposed along the guide portion.

Therefore, the connecting piece can move along the extending direction of the guide part, so that the connecting piece can be quickly guided through the guide part, and the moving speed of the connecting piece along the first direction can be increased.

In some embodiments, the pressing mechanism further includes a locking member that secures the connector to the guide.

When the pressing part is needed to be pressed on the second piece to be welded, the guide part can be fixed by the bolts, the connecting piece or the pressing piece is reduced to move under the action of external force, and the pressing part deviates from the pressing position, namely, the pressing part is far away from the second piece to be welded.

In some embodiments, the cover plate is provided with at least two sliding grooves which are distributed at intervals, the sliding grooves form a guiding part, the connecting piece is connected with one sliding groove through the locking piece, and the end part of the connecting piece, which is far away from the pressing piece, is in limiting abutting connection with the other sliding groove.

The guide part is arranged to be the chute, and the end part of the connecting piece can extend into the chute, so that the end part of the connecting piece is limited by the chute, the guiding accuracy of the guide part to the connecting piece can be improved, the deflection of the connecting piece in the moving process is reduced, the probability of deviating from the preset moving state is reduced, the contact area between the pressing part and the second piece to be welded is small, and the pressing effect of the pressing part is influenced.

In some embodiments, the connecting piece comprises a connecting part and a limiting part, wherein the limiting part is bent relative to the connecting part and is in limiting abutting connection with the sliding groove; one end of the connecting part is connected with a limiting part, the other end of the connecting part is connected with a pressing piece, and the connecting part is also connected with a locking piece;

and/or the connecting part is provided with a strip-shaped hole, the strip-shaped hole extends along the second direction, and the pressing piece is arranged at one part of the strip-shaped hole.

Therefore, the connecting mode between the connecting part and the pressing piece is simplified, convenience is provided for a user to drive the pressing piece to move along the third direction, and the manufacturing difficulty of the connecting part and the pressing piece is reduced.

In some embodiments, the pressing member includes a screw portion and a pressing portion, and the pressing portion and the screw portion are screwed in a thickness direction.

When the pressing part or the screw rod part is seriously worn, the pressing part or the screw rod part is convenient to replace, and the maintenance cost and the replacement difficulty of the pressing part are reduced.

In some embodiments, the pressing piece includes an elastic portion, the elastic portion is sleeved outside the screw portion, one end of the elastic portion abuts against the connecting piece, and the other end abuts against the pressing portion.

When the elastic part is used in a compressed state under the action of the pressing part, the elastic part can apply elastic deformation force to the pressing part and drive the pressing part to move towards the second part to be welded as far as possible so as to press the second part to be welded to the first part to be welded, so that the gap between the first part to be welded and the second part to be welded is reduced as far as possible, and the welding effect in the subsequent welding process is improved.

In some embodiments, the welding fixture further comprises a fixing mechanism, wherein the fixing mechanism is respectively connected with the bottom plate and the cover plate in a clamping state, and limits the bottom plate and the cover plate in a thickness direction.

During the use process of the welding fixture, the probability that one or both of the bottom plate and the cover plate deviate from the original assembly position due to the relative deviation of the bottom plate and the cover plate can be reduced.

In some embodiments, the fixing mechanism comprises a fixing piece and a buckle, the fixing piece is mounted on one of the bottom plate and the cover plate, and the buckle is arranged on the fixing piece;

when in the clamping state, the buckle can rotate to a position clamped with the other one of the bottom plate and the cover plate relative to the fixing piece.

Therefore, the bottom plate and the cover plate can be limited only by rotating the buckle, the use mode of the fixing mechanism is simplified, and the operation of a user is facilitated.

In some embodiments, the buckle comprises two clamping grooves which are distributed at intervals along the thickness direction, a protruding part is arranged between the two clamping grooves, and the protruding part and the fixing piece are rotationally connected through the rotating shaft;

the fixing piece is provided with avoiding grooves, one of the clamping grooves is clamped with the bottom plate in a clamping state, and the other clamping groove is communicated with the avoiding grooves.

By means of the arrangement, the occupied space of the fixing mechanism can be reduced on the basis that the limiting effect of the fixing mechanism is not affected, and the size of the whole welding tool can be reduced as much as possible.

In some embodiments, the fixing mechanism comprises an elastic member, one end of the elastic member is connected with the buckle in a clamping state, and the other end of the elastic member can penetrate through the avoidance groove to be connected with the cover plate; and/or the number of the groups of groups,

the positioning groove is formed in the bottom plate, and the positioning groove limits the fixing piece on the bearing surface.

Therefore, the elastic piece is arranged in the avoidance groove, and the elastic piece is used for connecting the cover plate and the buckle to realize the automatic return of the buckle. When the driving cover plate moves along the second direction, the positioning groove is used for limiting the cover plate, so that the probability of deviation of the position of the cover plate and the position of the bottom plate during assembly is reduced.

In some embodiments, the welding fixture further comprises a mounting piece, wherein the mounting piece penetrates through the bottom plate and the cover plate and is fixedly connected with the bottom plate and the cover plate; and/or the number of the groups of groups,

the welding fixture further comprises positioning pieces, wherein the positioning pieces are distributed at intervals around the opening, and the bottom plate and the cover plate are positioned.

Therefore, the connection stability between the bottom plate and the cover plate is further improved, and the probability of relative movement of the position relationship between the bottom plate and the cover plate is reduced in the use process.

In a second aspect, the present application provides a battery production system, which includes the welding tool in the above embodiment.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is an exploded view of a welding tool in accordance with one or more embodiments.

FIG. 2 is a schematic structural diagram of a welding tool in accordance with one or more embodiments.

Fig. 3 is a schematic structural view of a pressing mechanism of a welding tool in accordance with one or more embodiments.

FIG. 4 is a schematic structural view of a securing mechanism of a welding tool in accordance with one or more embodiments.

Reference numerals in the specific embodiments are as follows:

100. welding a tool;

10. a bottom plate; 11. a bearing surface; 12. a positioning groove; 20. a cover plate; 21. a guide part; 22. an opening; 30. a pressing mechanism; 31. a pressing member; 311. a pressing part; 312. a screw portion; 313. an elastic part; 32. a connecting piece; 321. a connection part; 3211. a bar-shaped hole; 322. a limit part; 33. a locking member; 40. a fixing mechanism; 41. a fixing member; 411. an avoidance groove; 42. a buckle; 421. a clamping groove; 422. a protruding portion; 423. a rotating shaft; 43. an elastic member; 50. a mounting member; 60. a positioning piece;

200. a first part to be welded; x, a first direction; y, second direction; z, thickness direction.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," and the like, if any, are used merely to distinguish between different objects and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, if the term "and/or" appears as only one association relationship describing the association object, it means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the associated object is an "or" relationship, if any.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "multiple" refers to two or more (including two), and "multiple" refers to two or more (including two).

In the description of the embodiments of the present application, if any, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are directional or positional relationships indicated based on the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

The processing process of the aluminum bar is roughly divided into blanking and forming the raw materials and then carrying out electrotinning treatment on the blanked and formed workpieces. In the whole processing process, the aluminum bar is easy to deform, and uneven parts appear on the surface of the aluminum bar, so that the flatness of the surface of the aluminum bar is affected. If the aluminum bar with unsatisfactory flatness and the PCB are welded together through a surface mount technology (Surface Mounted Technology, SMT), empty welding is easy to occur at a gap because a certain gap exists between the concave-convex part of the aluminum bar and the PCB, so that the welding quality of the aluminum bar is affected.

In order to solve the problem that blank welding occurs when aluminum bars and PCB plates are welded due to gaps between the aluminum bars and the PCB plates, the embodiment of the application provides a welding tool. The welding tool compresses the PCB to be welded in a clamping space formed between the cover plate and the bottom plate by using the cover plate, and exposes the part to be welded of the PCB to be welded. And then the pressing mechanism is used for pressing the aluminum bar on the part to be welded of the PCB to be welded so as to slightly reshape the aluminum bar, thereby reducing the gap between the aluminum bar and the PCB to be welded and further improving the welding quality.

The welding tool provided by the application can compress an aluminum sheet and a PCB together and weld the aluminum sheet, wherein the aluminum sheet mainly comprises pure aluminum, and a small amount of Si, fe, cu, mn and other elements.

The welding fixture 100 provided in the present application is described below.

Referring to fig. 1 and 2, some embodiments of the present application provide a welding tool 100. The welding fixture 100 comprises a bottom plate 10, a cover plate 20 and a pressing mechanism 30. The bottom plate 10 includes a supporting surface 11, the cover plate 20 has a clamping state set on the supporting surface 11, in the clamping state, the cover plate 20 and the supporting surface 11 form a clamping space, the cover plate 20 is provided with an opening 22, the clamping space is set around the opening 22, and the opening 22 exposes a part of the supporting surface 11. The pressing mechanism 30 is located at a side of the cover 20 away from the base plate 10, and moves along the supporting surface 11 relative to the cover 20, and the pressing mechanism 30 includes a pressing portion 311 capable of moving along the thickness direction of the base plate 10, where the pressing portion 311 can extend into the opening 22.

The support surface 11 of the base plate 10 can be used to support a component to be soldered (e.g., a PCB board) and can be used to mount the cover plate 20 and the like.

The cover plate 20 may have a size equal to that of the base plate 10 or smaller than that of the base plate 10. The opening 22 of the cover 20 may be formed in a middle area of the cover 20, for example, an opening 22 is formed in a middle portion of the cover 20, and the shape of the opening 22 may be, but is not limited to, rectangular, circular, or fan-shaped.

The state of the cover plate 20 with respect to the base plate 10 may include two states, one in which the cover plate 20 is in a released state with respect to the base plate 10, in which a clamping space cannot be formed between the cover plate 20 and the base plate 10, and the cover plate 20 may be coupled to the base plate 10, or the cover plate 20 and the base plate 10 may be separated.

The other is a clamped state in which the cover plate 20 is fitted to the base plate 10 with a clamping space formed therebetween. In the clamped state, the cover plate 20 can be used for pressing the PCB, the PCB can be limited in a clamping space formed between the cover plate 20 and the bottom plate 10, the cover plate 20 can press the periphery of the PCB, and the middle part of the PCB is exposed through the opening 22.

The pressing mechanism 30 may be slidably connected or clamped to the cover 20, and the moving path of the pressing mechanism 30 may be disposed along the edge of the opening 22. The pressing portion 311 is disposed at an end of the pressing mechanism 30 away from the cover plate 20, and may be made of a material such as silica gel.

In the actual use process, the to-be-welded piece can be placed on the supporting surface 11 of the bottom plate 10. Subsequently, the cover plate 20 can be mounted to the support surface 11. The part of the cover plate 20, which is not provided with the opening 22, can press the piece to be welded, and the opening 22 can expose part of the piece to be welded. The exposed region of the piece to be welded is understood to be the region to be welded.

When the welding is required to be performed on the area to be welded, the pressing portion 311 of the pressing mechanism 30 may be driven to move in a direction approaching the base plate 10, and press the vicinity of the area to be welded to position it for subsequent welding. When the areas to be welded are scattered, the pressing mechanism 30 can be driven to move along the supporting surface 11 until the pressing portion 311 of the pressing mechanism 30 moves to the vicinity of the areas to be welded. Subsequently, the pressing portion 311 may be driven to move in a direction approaching the base plate 10 until the pressing portion 311 abuts against the workpiece to be welded. And repeating the steps until all the areas to be welded of the parts to be welded are welded.

In summary, when the workpiece is pressed in the clamping space between the bottom plate 10 and the cover plate 20, the pressing portion 311 of the pressing mechanism 30 can be driven to sequentially move to each of the welding areas of the workpiece, and press each of the welding areas of the workpiece to position and slightly reshape the workpiece. Therefore, the subsequent welding process can be conveniently performed, the probability of false welding during welding is reduced, and the welding qualification rate is improved.

The bottom plate 10 may be provided with a lightening hole, which may reduce the overall weight of the welding tool 100, and may dissipate heat during welding.

With continued reference to fig. 1 and 2, in some embodiments, the supporting surface 11 of the base plate 10 is used for supporting the first to-be-welded component 200, and the first to-be-welded component 200 is limited in the clamping space and is exposed by the opening 22; the pressing mechanism 30 is used for pressing the second workpiece to be welded to the first workpiece to be welded 200 through the opening 22; and/or the base plate 10 and the cover plate 20.

For example, assuming that the first part to be welded 200 is a PCB board and the second part to be welded is aluminum bar, when the PCB board and the aluminum bar need to be welded together, the PCB board may be placed on the supporting surface 11 of the base plate 10. The cover plate 20 and the base plate 10 may then be assembled together, at which time the cover plate 20 may be pressed against the peripheral portion of the PCB, and portions of the PCB may be exposed to the external environment through the openings 22. Next, an aluminum bar may be placed on the exposed portion of the PCB, and the pressing portion 311 of the pressing mechanism 30 may extend into the opening 22 and press the aluminum bar onto the PCB.

When the flatness of the aluminum bar surface is poor, the uneven part of the aluminum bar surface can be pressed by the pressing part 311, so that the gap between the aluminum bar and the PCB is reduced, and the probability of empty welding of the aluminum bar and the PCB is reduced. In addition, can also let the solder paste fully fill during the welding, reduce the void ratio after the welding, promote the welding qualification rate of aluminium bar when promoting the excessive current temperature resistance of product.

It will be appreciated that the number of pressing mechanisms 30 may be plural, and that a plurality of pressing mechanisms may be distributed around the opening 22, and when a plurality of scattered aluminum bars and a PCB board need to be welded together, a plurality of aluminum bars may be pressed against different portions of the PCB board at the same time, and then welded.

Referring to fig. 2 and 3, in some embodiments, the pressing mechanism 30 includes a pressing member 31 and a connecting member 32, the connecting member 32 is disposed on the cover 20 and is movably disposed along a first direction X parallel to the supporting surface 11, the pressing member 31 is disposed on the connecting member 32 and is movably disposed along a second direction Y intersecting the first direction X, and the second direction Y is parallel to the supporting surface 11; the pressing member 31 includes a pressing portion 311.

The connection between the connector 32 and the cover 20 may be, but is not limited to, a snap-fit, sliding connection. The end of the connecting piece 32 far away from the cover plate 20 is connected with the pressing piece 31, and the connecting mode between the connecting piece 32 and the pressing piece 31 can be but not limited to clamping connection and sliding connection. The end of the pressing member 31 remote from the connecting member 32 is provided with a pressing portion 311.

In the actual use process, if the initial position of the pressing portion 311 is spaced a certain distance from the second piece to be welded, the connecting piece 32 can be driven to move along the first direction X toward the direction close to the second piece to be welded, and the pressing piece 31 can be driven to move together by the connecting piece 32. When the pressing part 311 comes above the second workpiece to be welded, the moving of the connecting member 32 may be stopped, and the pressing member 31 may be driven to move in a direction approaching the second workpiece to be welded until the pressing member 31 presses the second workpiece to be welded to the first workpiece to be welded 200.

The pressing mechanism 30 is divided into two parts, namely the detachable pressing piece 31 and the connecting piece 32, when any one of the pressing piece 31 and the connecting piece 32 is damaged, only one damaged part can be replaced, and the maintenance cost of the welding tool 100 is reduced.

As shown in fig. 2, in some embodiments, the cover plate 20 is provided with a guide portion 21, the guide portion 21 being disposed to extend in the first direction X, and the connection member 32 being disposed movably along the guide portion 21.

The shape of the guide 21 may be, but is not limited to, a slide rail extending in the first direction X. The connecting piece 32 can move along the extending direction of the guiding part 21, so that the connecting piece 32 can be quickly guided by the guiding part 21, and the moving speed of the connecting piece 32 along the first direction X can be increased.

Further, referring to fig. 2 and 3, in some embodiments, the pressing mechanism 30 further includes a locking member 33, and the locking member 33 fixes the connecting member 32 to the guiding portion 21.

The locking member 33 may be a member such as a bolt, and the connecting member 32 may be fixed to any portion of the guide portion 21 by the bolt. When the pressing part 311 is needed to be pressed against the second piece to be welded, the connecting piece 32 can be fixed by the bolts, so that the connecting piece 32 or the pressing piece 31 is reduced to move under the action of external force, and the pressing part 311 deviates from the pressing position, i.e. the pressing part 311 is far away from the second piece to be welded.

Further, in some embodiments, as shown in fig. 2, at least two sliding grooves are formed on the cover plate 20, the sliding grooves form a guiding portion 21, the connecting piece 32 is connected with one of the sliding grooves through a locking piece 33, and an end portion of the connecting piece 32 away from the pressing piece 31 is in limiting abutting connection with the other sliding groove.

Illustratively, as shown in fig. 2, the cover 20 is provided with two sliding grooves spaced apart, and the two sliding grooves may be located on the same side of the opening 22. To facilitate distinguishing between the two runners, the runner near the opening 22 may be designated as the first runner and the other runner as the second runner. The end of the connecting piece 32 far away from the pressing piece 31 can extend into the second sliding groove, and the bolt can be in threaded connection with the first sliding groove, so that the connecting piece 32 is fixed.

Of course, in other embodiments, the end of the connecting piece 32 away from the pressing piece 31 may extend into the first sliding groove, and the bolt may be screwed with the second sliding groove, so as to fix the connecting piece 32.

So, set up the guide part 21 as the spout to make the tip of connecting piece 32 can stretch into in the spout, thereby utilize the spout to carry out spacingly to the tip of connecting piece 32, can improve the direction accuracy of guide part 21 to connecting piece 32, reduce connecting piece 32 and take place to deflect at the removal in-process, and the probability of skew default mobile state appears, thereby lead to pushing down portion 311 and the second to wait that the area of contact between the weldment is less, and then influence the compaction effect of pushing down portion 311.

As shown in fig. 3, in particular to some embodiments, the connecting piece 32 includes a connecting portion 321 and a limiting portion 322, where the limiting portion 322 is bent and arranged relative to the connecting portion 321 and is in limiting abutment with the chute; one end of the connecting part 321 is connected with a limiting part 322, the other end is connected with a pressing piece 31, and the connecting part 321 is also connected with a locking piece 33; and/or, the connecting portion 321 is provided with a bar-shaped hole 3211, the bar-shaped hole 3211 extends along the second direction Y, and the pressing member 31 is mounted at one part of the bar-shaped hole 3211.

The connecting portion 321 and the limiting portion 322 may have a substantially L-shape.

In some examples, when the connecting member 32 is assembled on the cover 20, an end of the limiting portion 322 away from the connecting portion 321 may extend into the chute, and a section of the connecting portion 321 away from the limiting portion 322 may be located above the opening 22, where the end of the section is connected with the pressing member 31.

When the welding tool 100 is used, the connecting portion 321 may be fixed to any portion of the guide portion 21 by loosening or tightening the locking member 33. In the moving process of the connecting portion 321, the limiting portion 322 is always located in the chute, and when the pressing portion 311 moves above the second workpiece to be welded, the pressing member 31 can be driven to move in a direction approaching the second workpiece to be welded.

In other examples, the pressing member 31 and the bar-shaped hole 3211 may be, but not limited to, clamped or fastened by a bolt. In this way, not only is the connection between the connection portion 321 and the pressing member 31 simplified, but also the user is facilitated to drive the pressing member 31 to move in the third direction.

In still other examples, when the connecting piece 32 is assembled on the cover 20, the end of the limiting portion 322 away from the connecting portion 321 may extend into the chute, a section of the connecting portion 321 away from the limiting portion 322 may be located above the opening 22, and the connecting portion 321 is provided with a bar-shaped hole 3211, where the bar-shaped hole 3211 is connected with the pressing piece 31.

In use, the connecting portion 321 can be secured to any portion of the guide portion 21 by loosening or tightening the locking member 33 during movement of the connecting portion 321. And in the process, the limiting part 322 is always positioned in the chute. When the pressing part 311 moves above the second workpiece to be welded, the pressing part 31 may be driven to move along the bar-shaped hole 3211 until the pressing part 311 is located right above the second workpiece to be welded, and finally the pressing part 31 may be driven to move in a direction close to the second workpiece to be welded until the pressing part 311 presses the second workpiece to be welded to the first workpiece to be welded 200.

The above arrangement simplifies the connection mode between the connecting part 321 and the limiting part 322, and reduces the manufacturing difficulty of the connecting part and the limiting part.

In some embodiments, referring to fig. 3, the pressing member 31 includes a screw portion 312 and a pressing portion 311, and the pressing portion 311 and the screw portion 312 are screwed in a thickness direction.

The screw portion 312 and the pressing portion 311 are detachably connected or integrally formed. For example, the threaded portion 312 may be a bolt. One end of the bolt is in threaded connection with the bar-shaped hole 3211, and the other end of the bolt can be in threaded connection with the pressing portion 311.

Thus, the screw portion 312 is screwed to drive the pressing portion 311 to move away from or close to the bar-shaped hole 3211, so as to achieve the contact or separation between the pressing portion 311 and the second workpiece to be welded. When the lower pressing part 311 or the screw part 312 is severely worn, the lower pressing part 311 or the screw part 312 is also convenient to replace, and the maintenance cost and the replacement difficulty of the pressing piece 31 are reduced.

Specifically, in some embodiments, the pressing member 31 includes an elastic portion 313, the elastic portion 313 is sleeved outside the screw portion 312, one end of the elastic portion 313 abuts against the connecting member 32, and the other end abuts against the pressing portion 311.

The elastic portion 313 may be a spring extending in the third direction. When the pressing member 31 and the connecting member 32 are assembled together, one end of the bolt portion may sequentially pass through the bar-shaped hole 3211 and the elastic portion 313 and be connected with the pressing portion 311, so that both ends of the elastic portion 313 are respectively abutted with the connecting portion 321 and the pressing portion 311 of the connecting member 32.

In this way, when the elastic portion 313 is used in a compressed state under the action of the pressing portion 311, the elastic portion 313 can apply an elastic deformation force to the pressing portion 311 and drive the pressing portion 311 to move toward the second workpiece to be welded as far as possible, so as to compress the second workpiece to be welded to the first workpiece to be welded 200, thereby reducing the gap between the first workpiece to be welded 200 and the second workpiece to be welded as far as possible, and further improving the welding effect in the subsequent welding process.

As shown in fig. 3, in some embodiments, the welding fixture 100 further includes a fixing mechanism 40, and in the clamped state, the fixing mechanism 40 is connected to the bottom plate 10 and the cover plate 20, and limits the bottom plate 10 and the cover plate 20 in the thickness direction.

The fixing mechanism 40 may be, but not limited to, a snap 42, which may be provided at an edge or other portion area of the cover plate 20, so long as the bottom plate 10 and the cover plate 20 can be limited in the thickness direction. For example, the securing mechanism 40 may be provided at the edges of the base plate 10 and the cover plate 20 to connect the two together. Alternatively, the fixing mechanism 40 can penetrate through the bottom plate 10 and the cover plate 20 in the thickness direction to connect the two together.

In this manner, during use of the welding tool 100, the probability of relative misalignment of both the base plate 10 and the cover plate 20, resulting in one or both being offset from the original assembly position, can be reduced.

Specifically, as shown in fig. 4, in some embodiments, the fixing mechanism 40 includes a fixing member 41 and a buckle 42, the fixing member 41 is mounted to one of the base plate 10 and the cover plate 20, and the buckle 42 is provided to the fixing member 41. When in the clamped state, the buckle 42 can rotate relative to the fixing piece 41 to a position of being clamped with the other of the bottom plate 10 and the cover plate 20.

Illustratively, in the example shown in fig. 4, the fixing member 41 may be mounted to the cover plate 20 by a detachable fastener such as a screw, and the buckle 42 may be rotatably connected to the fixing member 41. When the base plate 10 and the cover plate 20 are assembled together, the catch 42 may be rotated so that the catch 42 and the base plate 10 are snapped together. When the bottom plate 10 and the cover plate 20 need to be separated, the buckle 42 can be rotated first to separate the buckle 42 from the bottom plate 10, and then the separation work of the bottom plate 10 and the cover plate 20 can be performed.

Similarly, when the fixing member 41 is mounted on the base plate 10 and the buckle 42 is engaged with the cover plate 20, the working principle is similar to that of the above scheme, and the description is omitted here.

By the arrangement, the bottom plate 10 and the cover plate 20 can be limited only by rotating the buckle 42, so that the use mode of the fixing mechanism 40 is simplified, and the operation of a user is facilitated.

Referring to fig. 4, in some embodiments, the buckle 42 includes two slots 421 spaced apart in a thickness direction, a protrusion 422 is disposed between the two slots 421, and the protrusion 422 and the fixing member 41 are rotatably connected via a rotation shaft 423. The fixing member 41 is provided with avoiding slots 411, and in a clamped state, one of the clamping slots 421 is clamped with the bottom plate 10, and the other clamping slot 421 is communicated with the avoiding slot 411.

Illustratively, as shown in fig. 4, to facilitate distinguishing between the two card slots 421 of the buckle 42, the two card slots may be respectively named as a first card slot 421 and a second card slot 421. The first clamping groove 421 can be clamped with the bottom plate 10. The second clamping groove 421 may be in communication with the avoiding groove 411.

The operation of the fixing mechanism 40 will be described with respect to the process of switching the cover plate 20 from the clamped state to the unclamped state.

As shown in fig. 4, when the cover 20 is in the clamped state, the fixing member 41 may be mounted on the edge of the cover 20, and the second locking groove 421 of the buckle 42 is in communication with the escape groove 411 of the fixing member 41. The first slot 421 of the latch 42 is engageable with the base plate 10. The catch 42 may be driven to deflect inwardly of the escape slot 411 until the bottom plate 10 is disengaged from the first catch slot 421. Thus, the restriction of the fixing mechanism 40 to the bottom plate 10 and the cover plate 20 in the thickness direction can be released.

By the arrangement, the occupied space of the fixing mechanism 40 can be reduced on the basis that the limiting effect of the fixing mechanism 40 is not affected, so that the size of the whole welding tool 100 is reduced as much as possible.

Further, as shown in fig. 4, in some embodiments, the fixing mechanism 40 includes an elastic member 43, and in a clamped state, one end of the elastic member 43 is connected to the buckle 42, and the other end can be connected to the cover plate 20 through the escape slot 411; and/or, as shown in fig. 1, the bottom plate 10 is provided with a positioning groove 12, and the positioning groove 12 limits the fixing piece 41 on the supporting surface 11.

In the clamped state, the elastic member 43 can be in two states when assembled between the cover plate 20 and the buckle 42, one is that the elastic member 43 is in a normal state in which elastic deformation does not occur, and the other is that the elastic member 43 is in a slightly deformed stretched state. The working principle of the fixing mechanism 40 will be described below in the case where the elastic member 43 is assembled in different states.

When the cover 20 is in the clamped state, it is assumed that the two ends of the elastic member 43 are respectively connected to the cover 20 and the buckle 42, and the elastic member 43 is not elastically deformed and is in a normal state. When the cover plate 20 needs to be disassembled, an external force is applied to the buckle 42, so that the buckle 42 can be driven to deflect towards the inside of the avoidance slot 411 until the first clamping slot 421 is separated from the bottom plate 10. At this time, the buckle 42 can continuously compress the elastic member 43, so that the elastic member 43 is elastically deformed and generates an elastic restoring force. Because the direction of the elastic restoring force is distributed along the cover 20 toward the latch 42, the latch 42 can rotate in the opposite direction of the elastic restoring force when the external force is removed from the latch 42.

When the cover 20 is in the clamped state, it is assumed that the two ends of the elastic member 43 are respectively connected to the cover 20 and the buckle 42, and the elastic member 43 is slightly elastically deformed and is in a stretched state. The elastic member 43 can generate an elastic restoring force, which is distributed from the buckle 42 toward the cover 20. But the elastic restoring force is insufficient to drive the rotation of the buckle 42.

When the cover plate 20 needs to be disassembled, an external force is applied to the buckle 42, so that the buckle 42 can be driven to deflect towards the inside of the avoidance slot 411 until the first clamping slot 421 is separated from the bottom plate 10. At this time, the buckle 42 can continuously compress the elastic member 43, resulting in the elastic member 43 being switched from the stretched state to the compressed state. The elastic restoring force generated by the elastic member 43 at this time is opposite to the elastic restoring force of the elastic member 43 in a stretched state. When the external force is removed from the buckle 42, the buckle 42 can reversely rotate under the action of the elastic restoring force.

In this way, the elastic member 43 is disposed in the avoiding slot 411, and the cover plate 20 and the buckle 42 are connected by the elastic member 43, so that the buckle 42 can return automatically.

In some examples, the bottom plate 10 is provided with a positioning groove 12 recessed inwards, and when the fixing piece 41 is installed in the positioning groove 12, the fixing piece 41 can abut against a groove wall of the positioning groove 12 so as to limit the fixing piece 41. The positioning groove 12 may extend along the second direction Y, so that the positioning groove 12 is used to limit the cover 20 while the cover 20 is driven to move along the second direction Y, so as to reduce the probability of deviation of the positions of the cover 20 and the bottom plate 10 when assembled.

It should be noted that, in some examples, the fixing mechanism 40 of the welding fixture 100 includes an elastic member 43, and the base plate 10 is further provided with a positioning slot 12. In other examples, the welding fixture 100 is provided with only one of the elastic member 43 of the fixing mechanism 40 and the positioning groove 12 of the base plate 10.

Referring to fig. 2, in some embodiments, the welding fixture 100 further includes a mounting member 50, where the mounting member 50 penetrates the bottom plate 10 and the cover plate 20 and fixedly connects the bottom plate 10 and the cover plate 20; and/or referring to fig. 1, the welding tool 100 further includes positioning members 60, wherein the positioning members 60 are spaced around the opening 22, and position the bottom plate 10 and the cover plate 20.

The mounting member 50 may include nuts and bolts, which may be inserted through the base plate 10 and the cover plate 20 and fixed by the nuts. The positioning member 60 may be a positioning shaft, and both ends thereof may be connected to the base plate 10 and the cover plate 20, respectively.

Illustratively, as shown in fig. 2, two sides of the cover plate 20 disposed opposite to each other in the second direction Y are respectively provided with a positioning member 60. The positioning shafts may be spaced around the edge of the opening 22. In this way, the connection stability between the base plate 10 and the cover plate 20 is further improved, and the probability of relative movement of the positional relationship between the base plate 10 and the cover plate 20 is reduced during use.

In other examples, only one of the mounting member 50 and the positioning member 60 may be provided, and the specific situation may be determined according to the actual situation.

In still other examples, the mounting members 50 and securing mechanisms 40 may be alternately spaced around the opening 22. In order to limit both the base plate 10 and the cover plate 20 in multiple directions while reducing the number of components such as the mounting member 50.

In addition, the application also provides a battery production system. The battery production system includes the welding fixture 100 of any of the embodiments described above. For the relevant content of the welding fixture 100, reference is made to the above description, and the description is omitted here.

In particular, as shown in fig. 2, the welding fixture 100 includes a base plate 10 and a cover plate 20, where the cover plate 20 is assembled on the base plate 10, and a clamping space can be formed between the cover plate and the base plate 10. When the PCB is placed on the bottom plate 10, the cover plate 20 can press the edge of the PCB, and the opening 22 of the cover plate 20 can expose the middle part of the PCB. Two sliding grooves which are distributed at intervals are arranged on two opposite side edges of the opening 22 in the second direction Y, and each sliding groove extends along the first direction X and forms a guide part 21. The pressing mechanism 30 is slidably connected to the chute, and can be fixed to any position of the chute by the locking member 33.

When the aluminum bar is placed on the portion to be soldered of the PCB board, if the aluminum bar is spaced apart from the pressing portion 311 of the pressing mechanism 30 in the first direction X or the second direction Y by a certain distance, the pressing member 31 of the pressing mechanism 30 may be driven to move in the first direction X or the second direction Y until the pressing portion 311 comes directly above the aluminum bar. The pressing member 31 may then be driven to move in the thickness direction toward the direction approaching the aluminum bar until the pressing portion 311 presses the aluminum bar against the PCB board and slightly shapes the aluminum bar to reduce a gap between the aluminum bar and the PCB board as much as possible, thereby improving the welding quality.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (14)

1. Welding frock, its characterized in that includes:

the bottom plate comprises a bearing surface;

the cover plate is in a clamping state and is positioned on the bearing surface, a clamping space is formed between the cover plate and the bearing surface in the clamping state, an opening is formed in the cover plate, the clamping space is arranged around the opening, and part of the bearing surface is exposed out of the opening;

the pressing mechanism is positioned at one side of the cover plate, which is away from the bottom plate, and moves along the bearing surface relative to the cover plate, and comprises a pressing part which can move along the thickness direction of the bottom plate and can extend into the opening;

the pressing mechanism comprises a pressing piece and a connecting piece, wherein the connecting piece is arranged on the cover plate and is movably arranged along a first direction parallel to the bearing surface, the pressing piece is arranged on the connecting piece and is movably arranged along a second direction intersecting the first direction, and the second direction is parallel to the bearing surface;

the pressing piece comprises the pressing part.

2. The welding fixture of claim 1, wherein the bearing surface of the bottom plate is used for bearing a first part to be welded, and the first part to be welded is limited in the clamping space and exposed by the opening; the pressing mechanism is used for pressing the second part to be welded to the first part to be welded through the opening; and/or the number of the groups of groups,

the bottom plate is detachably connected with the cover plate.

3. The welding fixture of claim 1, wherein the cover plate is provided with a guide portion extending in a first direction, and the connector is movably disposed along the guide portion.

4. The welding fixture of claim 3, wherein the pressing mechanism further comprises a locking member that secures the connector to the guide.

5. The welding fixture of claim 4, wherein at least two sliding grooves are formed in the cover plate at intervals, the sliding grooves form the guiding portion, the connecting piece is connected with one of the sliding grooves through the locking piece, and the end portion, away from the pressing piece, of the connecting piece is in limiting abutting connection with the other sliding groove.

6. The welding fixture of claim 5, wherein the connecting piece comprises a connecting part and a limiting part, and the limiting part is bent relative to the connecting part and is in limiting abutting connection with the sliding groove; one end of the connecting part is connected with the limiting part, the other end of the connecting part is connected with the pressing part, and the connecting part is also connected with the locking part;

and/or the connecting part is provided with a strip-shaped hole, the strip-shaped hole extends along the second direction, and the pressing piece is arranged at one part of the strip-shaped hole.

7. The welding fixture according to claim 1, wherein the pressing member includes a screw portion and the pressing portion, the pressing portion and the screw portion being screwed in the thickness direction.

8. The welding fixture of claim 7, wherein the pressing member comprises an elastic portion, the elastic portion is sleeved outside the screw portion, one end of the elastic portion is abutted to the connecting member, and the other end of the elastic portion is abutted to the pressing portion.

9. The welding fixture of claim 1, further comprising a fixing mechanism connected to the bottom plate and the cover plate in the clamped state, and limiting the bottom plate and the cover plate in the thickness direction.

10. The welding fixture of claim 9, wherein the securing mechanism comprises a securing member mounted to one of the base plate and the cover plate and a clasp disposed to the securing member;

when in the clamping state, the buckle can rotate relative to the fixing piece to a position clamped with the other one of the bottom plate and the cover plate.

11. The welding fixture of claim 10, wherein the buckle comprises two clamping grooves which are distributed at intervals along the thickness direction, a protruding part is arranged between the two clamping grooves, and the protruding part and the fixing piece are rotationally connected through a rotating shaft;

the fixing piece is provided with avoiding grooves, one of the clamping grooves is clamped with the bottom plate in the clamping state, and the other clamping groove is communicated with the avoiding groove.

12. The welding fixture of claim 11, wherein the fixing mechanism comprises an elastic member, one end of the elastic member is connected with the buckle in the clamping state, and the other end of the elastic member can penetrate through the avoidance groove to be connected with the cover plate; and/or the number of the groups of groups,

the bottom plate is provided with a positioning groove, and the positioning groove limits the fixing piece to the bearing surface.

13. The welding fixture of claim 1, further comprising a mounting member penetrating the base plate and the cover plate and fixedly connecting the base plate and the cover plate; and/or the number of the groups of groups,

the welding fixture further comprises positioning pieces, wherein the positioning pieces are distributed around the opening at intervals and are used for positioning the bottom plate and the cover plate.

14. A battery production system comprising a welding fixture as claimed in any one of claims 1-13.