CN215146177U - Closing device and welding machine - Google Patents

Abstract

The utility model relates to a compressing device, including compressing tightly the subassembly, compress tightly the subassembly and include mount pad and two piece at least tuckers, each the tucker all along first direction but independently reciprocating motion connect in the mount pad, each the tucker is followed the one end of first direction has a face of compressing tightly, arbitrary the tucker compress tightly the face and all move towards the battery piece, it is arbitrary the face of compressing tightly is followed the first direction orientation the orthographic projection of battery piece all is located the welding point, under normal condition, two at least faces of compressing tightly must be impressed the busbar in the welding point completely for busbar and welding point in close contact with. When the pressing pin slightly deviates, because each pressing pin can independently move, the pressing pin still corresponds to the welding point at the moment, and the bus bar is completely pressed into the welding point, so that the bus bar is in close contact with the welding point, and the condition of insufficient welding of the bus bar and the welding point is avoided. The utility model discloses still relate to a welding machine.

Description

Closing device and welding machine

Technical Field

The utility model relates to a battery piece welding equipment technical field especially relates to a closing device and welding machine.

Background

The busbar realizes one of the mode that a plurality of battery pieces are connected with the welding of a plurality of battery pieces together, specifically is to set up the welding point on the battery piece, and the welding point is the sunken part down on the battery piece, then compresses tightly the busbar in the welding point through the tucking for busbar and welding point in close contact with, then realize the welding solidification with the heating of hot-blast gun. But present tucking is cylindrical, and when the tucking took place to squint, the tucking supported and is pressed in the position that the welding point edge is exceeded to can't impress the busbar in the welding point completely, make the busbar unable and welding point in close contact with, lead to the rosin joint.

SUMMERY OF THE UTILITY MODEL

Therefore, the pressing device and the welding machine have the advantages that the bus bar can be completely pressed into the welding point under the condition that the pressing pin is deviated, and the false welding between the bus bar and the welding point is avoided.

A compression device, comprising:

the pressing assembly comprises an installation seat and at least two pressing pins, each pressing pin is connected to the installation seat in a reciprocating mode independently along a first direction, one end, along the first direction, of each pressing pin is provided with a pressing surface, the pressing surface of any pressing pin faces the battery piece, and the orthographic projection of any pressing surface, facing the battery piece, of the pressing surface is located on the welding point.

Through adopting foretell closing device, the pressing surface of tucking is used for supporting and presses the busbar, impresses the busbar in the welding point completely, and arbitrary pressing surface is located the welding point towards the orthographic projection of battery piece. Under normal conditions, at least two pressing surfaces can certainly press the bus bar into the welding point completely for the bus bar closely contacts with the welding point. And when the tucking takes place slight skew, there is a tucking at least to support the busbar in the position that the welding point edge is high, but because every tucking can independently remove, there is the tucking still to correspond the welding point this moment, impresses the busbar completely in the welding point for busbar and welding point in close contact with avoids appearing busbar and welding point rosin joint's the condition.

In one embodiment, the pressing device further comprises a mounting plate, the pressing assemblies comprise a plurality of groups, and the groups of pressing assemblies are connected to the mounting plate and are arranged at intervals along a second direction perpendicular to the first direction.

In one embodiment, the mounting plate is provided with a plurality of connecting positions which are sequentially arranged along the second direction, and any one of the pressing assemblies is detachably connected with any one of the connecting positions.

In one embodiment, each of the connection positions is provided with at least two sets of connection hole sets, and the pressing device further comprises a connecting member, wherein the connecting member can be arranged on any one of the pressing assemblies in a penetrating manner and connected to the connection hole set on any one of the connection positions.

In one embodiment, any of the compression assemblies comprises an adjustment state and a fixing state;

when the compaction assembly is in the adjustment state, the compaction assembly can move back and forth along the second direction;

when the hold-down assembly is in the secured state, the hold-down assembly is secured relative to the mounting plate.

In one embodiment, the pressing assembly further includes at least two guide posts, each guide post is connected to the mounting seat, and each pressing pin is connected to the corresponding guide post in a reciprocating manner along the first direction.

In one embodiment, the pressing assembly further comprises at least two elastic members, each elastic member is connected between the mounting seat and a corresponding pressing pin and used for providing elastic force for enabling the pressing surface of the pressing pin to be away from the mounting seat.

A welding machine comprises the pressing device.

In one embodiment, the welding machine further comprises a cantilever assembly connected to the mounting plate and a hot air member connected to the cantilever assembly for blowing hot air toward the welding point.

In one embodiment, the hot air piece comprises an adjusting state and a fixing state;

when the hot air piece is in the adjusting state, the hot air piece can move in a reciprocating mode along a second direction perpendicular to the first direction;

when the hot air piece is in the fixed state, the hot air piece is fixed relative to the cantilever assembly.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a welding machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of another angle of the welder shown in FIG. 1;

FIG. 3 is a schematic view of a further angle of a portion of the mechanism of the welder shown in FIG. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

For the convenience of explanation the technical scheme of the utility model, the welding point and the welding between welding point and the busbar on the battery piece are explained here: the welding point on the battery piece is the portion of sinking down on the battery piece, and the bottom of welding point is the plane, and when welding between busbar and the welding point, in order to avoid the rosin joint between busbar and the welding point, need impress the busbar completely in the welding point for busbar and welding point in close contact with.

The area of the cross section of current cylindric tucker is great, and after it took place the skew, the tucker supported to press the busbar can with the position contact of the higher of welding point edge, can't impress the bottom of welding point with the busbar to lead to in the busbar can't impress the welding point completely, make to take place the rosin joint between busbar and the welding point.

An embodiment of the utility model provides a closing device 10 for when busbar and battery piece weld, compress tightly the busbar in the welding point on the battery piece, like fig. 1, this closing device 10 is including compressing tightly the subassembly, compress tightly the subassembly and include mount pad 11 and two piece at least tuckers 12, each tucker 12 all connects in mount pad 11 along the independent reciprocating motion ground of first direction, each tucker 12 has a compression surface 121 along the one end of first direction, arbitrary compression surface 121 who compresses tightly 12 all faces the battery piece, and arbitrary compression surface 121 is located the welding point towards the orthographic projection of battery piece.

By adopting the pressing device 10, the pressing surfaces 121 of the pressing pins 12 are used for abutting against the bus bars, so that the bus bars are completely pressed into the welding points, and the orthographic projection of any pressing surface 121 facing the battery piece is located at the welding points. Under normal circumstances, at least two pressing surfaces 121 are bound to be able to press the bus bar completely into the welding point, so that the bus bar is in close contact with the welding point. When the press pin 12 slightly deviates, at least one press pin 12 is arranged to support the bus bar at the position higher than the edge of the welding point, but because each press pin 12 can independently move, the press pin 12 still corresponds to the welding point at the moment, and the bus bar is completely pressed into the welding point, so that the bus bar is in close contact with the welding point, and the condition of insufficient welding of the bus bar and the welding point is avoided.

It should be noted that, in a normal case (i.e., in a case where the pressing pins 12 are not shifted), the arrangement center of at least two pressing pins 12 (taking fig. 2 as an example, the arrangement center is the middle of two pressing pins 12) corresponds to the center of the welding point, and an orthographic projection of the pressing surface 121 of any one pressing pin 12 toward the battery piece is located at the welding point.

When the pressing pins 12 slightly deviate, the arrangement centers of at least two pressing pins 12 slightly deviate relative to the center of the bottom surface, but the orthographic projection of the pressing surface 121 of at least one pressing pin 12 towards the battery piece still locates at the welding point, as shown in fig. 2, when the pressing pins 12 slightly deviate towards the right, the pressing pin 12 on the right deviates out of the position corresponding to the welding point, but the orthographic projection of the pressing surface 121 of the pressing pin 12 on the left towards the battery piece may only move a certain distance towards the right on the welding point, and the pressing pin 12 on the left still corresponds to the welding point, so that the bus bar can still be completely pressed into the welding point.

It can be understood that, compared with the existing pressing pin, the pressing device 10 in the above embodiment is mainly different in that the existing pressing pin inevitably causes the empty welding between the bus bar and the welding point in the case of slight deviation, whereas the pressing device 10 in the above embodiment still has one pressing pin 12 corresponding to the welding point in the case of slight deviation of the pressing pin 12, so that the bus bar can be completely pressed into the welding point, and the empty welding between the bus bar and the welding point is avoided.

In some embodiments, the pressing device 10 further includes a mounting plate 13, and the pressing assemblies include a plurality of groups, and the groups of pressing assemblies are connected to the mounting plate 13 and are spaced apart from each other along a second direction perpendicular to the first direction. Wherein the second direction is the left-right direction shown in fig. 1.

It should be noted that, a plurality of battery plates are welded to the bus bar, that is, the bus bar needs to be welded to the welding points of a plurality of welding points, each compressing assembly is used for compressing the bus bar to be in close contact with the corresponding welding point, so that the distance between two adjacent compressing assemblies is determined according to the distance between two corresponding adjacent welding points, so as to ensure that the compressing assemblies completely press the bus bar into the corresponding welding point.

In some embodiments, the mounting plate 13 is provided with a plurality of connecting positions sequentially arranged along the second direction, and any pressing component is detachably connected with any connecting position, so that the distance between two adjacent groups of pressing components can be adjusted, and the bus bar can be pressed on a plurality of battery pieces of different models.

Taking two adjacent groups of compressing components as an example, when one compressing component is connected to one connecting position, the other compressing component can be connected to other connecting positions, and the distance between the two groups of compressing components can be adjusted by connecting the compressing components to different connecting positions.

Furthermore, each connection position is provided with at least two groups of connection hole sets 131, and the pressing assembly further comprises a connecting member, wherein the connecting member can be arranged on any pressing assembly in a penetrating manner and connected to the connection hole set 131 on any connection position, so that the pressing assembly is connected to the mounting plate 13.

In some embodiments, there is at least one repeated set of the connection holes 131 on two adjacent connection positions, so that, under the condition that the number of the connection holes 131 on the mounting plate 13 is constant, the number of the connection positions is greater, thereby being capable of adjusting the position of the pressing assembly more flexibly.

It should be noted that, in this embodiment, there is duplication of the connection hole sets 131 on adjacent connection sites, so that two sets of adjacent pressing assemblies cannot be connected to two adjacent connection sites, i.e. adjustment of the spacing between adjacent pressing assemblies cannot be made more flexible.

Of course, in other embodiments, there may be no duplication of the set of connecting holes 131 on adjacent connection sites, and the compression assemblies may be connected to the adjacent connection sites simultaneously.

In practical application, two sets of connecting hole sets 131 are disposed on each connecting position, the connecting hole sets 131 on each connecting position are arranged at intervals along the second direction, the intervals between the two sets of connecting hole sets 131 are the same, and a set of repeated connecting hole sets 131 exist on two adjacent connecting positions.

In other words, the mounting plate 13 is provided with a plurality of sets of connecting holes 131 uniformly spaced along the second direction, and any two adjacent sets of connecting holes 131 form a connecting position.

In some embodiments, each of the connecting hole sets 131 includes two connecting holes spaced along the second direction, and the connecting member is inserted through the pressing member and connected to the connecting holes.

In some embodiments, the connector includes a plurality of connection bolts, each of which passes through a corresponding one of the compression assemblies and is threadedly coupled to a corresponding one of the connection holes, thereby securing the compression assemblies to the mounting plate 13. In practical application, the connecting bolt passes through the mounting seat 11 and is in threaded connection with the connecting hole.

In other embodiments, the connecting member may also be composed of a plurality of connecting bolts and a plurality of connecting nuts, each connecting bolt passes through a corresponding pressing assembly and a corresponding connecting hole, and then is in threaded connection with the connecting nut located on the side of the mounting plate 13 away from the pressing assembly, so as to fix the pressing assembly on the mounting plate 13.

In the above embodiment, the pressing assembly is detachably connected to the plurality of connecting positions to adjust the position of the mounting plate 13 along the second direction,

in other embodiments, either compression assembly includes an adjustment state and a securing state. When the pressing component is in the adjusting state, the pressing component can move back and forth along the second direction; when the hold-down assembly is in the secured state, the hold-down assembly is secured relative to the mounting plate 13.

So, when the position that compresses tightly the subassembly is adjusted to needs makes the subassembly that compresses tightly be applicable to the battery piece of different models, can be so that compress tightly the subassembly and be in the regulation state, then will compress tightly the subassembly and move to the position that corresponds with the welding point on the battery piece, will compress tightly the subassembly next and convert to fixed state for it is fixed to compress tightly subassembly relative mounting panel 13, ensures to compress tightly the subassembly and steadily impresses the welding point with the busbar.

The pressing assemblies can be movably connected to the mounting plate 13 by a connecting groove extending lengthwise along the second direction, and each pressing assembly is slidably connected to the connecting groove through a corresponding sliding block, so that the distance between the adjacent pressing assemblies can be conveniently adjusted.

In addition, the mounting seat 11 is fixedly connected to the slider, and the pressing device 10 further includes a fixing member, the fixing member is inserted into the mounting seat 11 and detachably connected to the mounting plate 13, so that the pressing assembly is fixed relative to the mounting plate 13, that is, when the fixing member is connected to the mounting plate 13, the pressing assembly is fixed relative to the mounting plate 13, and when the fixing member is separated from the mounting plate 13, the pressing assembly can move back and forth on the mounting plate 13, so that when the pressing assembly is moved to a position corresponding to a welding point, the pressing assembly is fixed relative to the mounting plate 13.

Wherein, the mounting can be bolt cooperation nut, and the bolt passes mount pad 11 and spread groove, and the nut is located the opposite side that mounting panel 13 deviates from mount pad 11, when screwing up the nut, can fix mount pad 11 on mounting panel 13.

Referring to fig. 1 and 2, in some embodiments, the pressing assembly further includes at least two guiding posts, each guiding post is connected to the mounting base 11, and each pressing pin 12 is connected to the corresponding guiding post in a reciprocating manner along the first direction, so as to prevent the pressing pin 12 from shifting when moving along the first direction.

It should be explained that, the effect of guide post is to avoid pressing the needle 12 to remove the in-process and take place the skew, and pressing needle 12 itself or mount 11 etc. take place the skew, also can lead to pressing the needle 12 to take place the skew to lead to compressing tightly face 121 to take place the skew, and then make the compressing tightly face 121 that has a pressing needle 12 at least to support the busbar in the position that the welding point edge is high.

In practical applications, each presser pin 12 is connected to two corresponding guide posts in a manner of reciprocating movement along the first direction, so as to further ensure the stability of the movement of the presser pin 12.

In other embodiments, the mounting base 11 is provided with at least two guiding holes penetrating through itself along the first direction, each guiding post is fixedly connected with a corresponding pressing pin 12, and each guiding post is disposed through a corresponding guiding hole in a reciprocating manner along the first direction.

In some embodiments, the pressing assembly further includes at least two elastic members 14, each elastic member 14 is connected between the mounting seat 11 and a corresponding pressing pin 12, and is configured to provide an elastic force for making the pressing surface 121 of the pressing pin 12 away from the mounting seat 11, that is, when the pressing surface 121 abuts against the bus bar, the pressure applied to the bus bar is the elastic force of the elastic member 14, and the pressure applied to the bus bar can be controlled according to the elastic member 14, so as to avoid crushing the bus bar and the battery piece.

In practical application, the elastic member 14 is a spring, two ends of the spring are respectively connected with the pressing pin 12 and the mounting seat 11, and the elastic member 14 is sleeved outside the guide post.

In some embodiments, the pressing assembly comprises two pressing pins 12, and the two pressing pins 12 are arranged at intervals along the second direction.

In other embodiments, the pressing assembly may also include three or more pressing pins 12, and besides the pressing pins 12 arranged at intervals in the second direction, the pressing pins 12 arranged at intervals in a third direction perpendicular to the first direction and the second direction may also be provided. The third direction is a direction perpendicular to the paper surface shown in fig. 1, i.e., a left-right direction shown in fig. 2.

The pressing pins 12 may contact each other, but each pressing pin 12 may move independently, and the pressing pins 12 are spaced apart from each other to avoid friction between them.

In practical applications, since the pressing surfaces 121 have a certain size and there is usually a space between the pressing surfaces 121, the number of the pressing pins 12 is preferably two or four in order to avoid providing an extra pressing pin 12 (i.e. a pressing pin 12 that normally cannot press the bus bar completely into the welding point).

When the number of the pressing pins 12 is two, the two pressing pins 12 are arranged at intervals along the second direction, and when the number of the pressing pins 12 is four, the four pressing pins 12 are arranged in an array along the second direction and the third direction.

In addition, it should be explained that, when the pressing pins 12 are four in an array arrangement, the arrangement center of the four pressing pins 12 is the center surrounded by the four pressing pins 12, that is, the four pressing pins 12 are uniformly spaced around the arrangement center.

In some embodiments, the pressing pin 12 has a connecting portion 122 and a pressing portion 123, an end of the connecting portion 122 away from the pressing portion 123 is connected to the mounting base 11 in a manner of being independently and reciprocally movable along a first direction, and an end surface of the pressing portion 123 away from the end of the connecting portion 122 is a pressing surface 121.

Further, the connecting portion 122 is connected to the guiding post and connected to an end of the elastic member 14 away from the mounting seat 11.

In addition, one end of the pressing portion 123 away from the connecting portion 122 is used for pressing the bus bar, and if one end of the pressing portion 123 away from the connecting portion 122 is a pointed end, the bus bar and the battery piece are easily punctured during pressing, so that one end of the pressing portion 123 away from the connecting portion 122 is an end portion with the pressing surface 121.

In some embodiments, the connecting portion 122 has a rectangular parallelepiped structure, the pressing portion 123 has a triangular block structure, and when the connecting portion 122 is connected to the pressing portion 123, an orthographic projection of the connecting portion 122 and the pressing portion 123 on a plane parallel to the first direction and the second direction is a right trapezoid.

Although the end 121 of the pressing portion 123 far from the connecting portion 122 is not pointed, the size of the pressing surface 121 is much smaller than that of the pressing portion 123, so that the pressing portion 123 can be regarded as a triangular block-shaped structure. Of course, to ensure the description is accurate, the pressing portion 123 may be regarded as a right-angled trapezoidal block structure.

When the projection of the whole pressing needle 12 on the plane parallel to the first direction, i.e. the second direction, is the right trapezoid, and there are two pressing needles 12, the longer sides of the two pressing needles 12 are disposed opposite to each other.

Referring to fig. 2 and 3, the present invention further provides a welding machine, which includes the pressing device 10 in the above embodiment.

In some embodiments, the welding machine further includes a cantilever assembly 20 and a hot air applicator 30, the cantilever assembly 20 being attached to the mounting plate 13, the hot air applicator 30 being attached to the cantilever assembly 20 for applying hot air toward the weld.

It should be noted that, during welding, the pressing surface 121 presses the bus bar to the welding point of the battery piece, and there is conductive adhesive or solder paste between the bus bar and the welding point of the welding point, and the hot air piece 30 blows hot air towards the welding point, so that the conductive adhesive or the solder paste melts, thereby completing welding.

In some embodiments, the welding machine further includes an intermediate plate 40, the mounting plate 13 being fixedly attached to one side of the intermediate plate 40, and the cantilever assembly 20 being fixedly attached to the other side of the intermediate plate 40 facing away from the mounting plate 13.

In some embodiments, the hot air piece 30 includes an adjustment state and a fixed state, and when the hot air piece 30 is in the adjustment state, the hot air piece 30 is reciprocally movable along the second direction; the hot air member 30 is defined relative to the boom assembly 20 when the hot air member is in a secured state. Therefore, after the position of the pressing assembly is adjusted, the hot air piece 30 is adjusted to the position corresponding to the welding point, and the hot air piece 30 is ensured to blow hot air to the welding point.

In practical applications, the hot air member 30 is a hot air gun.

In some embodiments, the suspension arm assembly 20 includes a suspension arm 21 and a connecting shaft 22, one end of the suspension arm 21 is connected to the mounting plate 13, the connecting shaft 22 is connected to the other end of the suspension arm 21, and the hot air blowing member 30 is connected to the connecting shaft 22. Further, the connecting shaft 22 is disposed lengthwise in the second direction, and the hot air member 30 is connected to the connecting shaft 22 to be reciprocally movable in the second direction.

In practical application, the cantilever 21 includes two, and the equal fixed connection in mounting panel 13 of one end of arbitrary cantilever 21, two cantilevers 21 are arranged along the second direction interval, and the relative both ends of connecting axle 22 respectively with two cantilevers 21 keep away from the other end fixed connection of mounting panel 13.

In some embodiments, the boom assembly 20 further comprises an adjustment block 23, the adjustment block 23 is reciprocally movably connected to the connection shaft 22 in the second direction, and the hot air member 30 is connected to the adjustment block 23.

Further, the adjusting block 23 includes a first clamping portion and a second clamping portion, the first clamping portion has an adjustable first clamping space, the connecting shaft 22 is clamped in the first clamping space, the adjusting block 23 can be fixed or movable relative to the connecting shaft 22 by adjusting the first clamping space, the second clamping portion has an adjustable second clamping space, the hot air piece 30 is clamped in the second clamping space, and the hot air piece 30 can be fixed or movable to be detached by adjusting the second clamping space.

In practical applications, the first clamping portion and the second clamping portion have the same structure, but the clamping directions of the first clamping portion and the second clamping portion are perpendicular to each other, that is, the first clamping portion clamps the connecting shaft 22 extending lengthwise in the second direction, and the second clamping portion clamps the hot air member 30 extending lengthwise in the direction perpendicular to the second direction.

It should be noted that, taking the first clamping portion as an example, the first clamping portion includes two clamping blocks and an adjusting bolt, the two clamping blocks are arranged at intervals along a direction perpendicular to the second direction, arc-shaped grooves are formed in opposite sides of the two clamping blocks, and the arc-shaped grooves of the two clamping blocks enclose to form a first clamping space. One of the two clamping blocks is provided with an adjusting hole, the other clamping block is provided with a through hole, the adjusting bolt penetrates through the through hole and is in threaded connection with the adjusting hole, and therefore the two clamping blocks are close to each other by screwing up the adjusting bolt, and the connecting shaft 22 is clamped.

Meanwhile, when the second clamping portion clamps the hot air piece 30, the hot air piece 30 is fixed relative to the connecting shaft 22, and the hot air piece 30 is in a fixed state, and when the second clamping portion releases the hot air piece 30, the hot air piece 30 is movable on the connecting shaft 22, and the hot air piece 30 is in an adjusting state.

Further, it can be understood that the connecting shaft 22 and the hot air piece 30 are respectively clamped by the first clamping portion and the second clamping portion, and when the connecting shaft 22 and the hot air piece 30 are not clamped by the first clamping portion and the second clamping portion, the adjusting block 23 can rotate around the connecting shaft 22, and the hot air piece 30 can rotate.

In some embodiments, the number of the hot air pieces 30 is multiple, any one of the hot air pieces 30 is connected to the cantilever assembly 20, and the multiple hot air pieces 30 are arranged at intervals along the second direction, so that each hot air piece 30 corresponds to a corresponding pressing surface 121, and thus, hot air is blown to the corresponding pressing surface 121.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A hold-down device for holding down a bus bar to a weld of a cell, the hold-down device comprising:

the pressing assembly comprises an installation seat and at least two pressing pins, each pressing pin is connected to the installation seat in a reciprocating mode independently along a first direction, one end, along the first direction, of each pressing pin is provided with a pressing surface, the pressing surface of any pressing pin faces the battery piece, and the orthographic projection of any pressing surface, facing the battery piece, of the pressing surface is located on the welding point.

2. The compression device of claim 1, further comprising a mounting plate, wherein the compression assemblies comprise a plurality of sets, each set of the compression assemblies being coupled to the mounting plate and spaced apart along a second direction perpendicular to the first direction.

3. The compression apparatus as claimed in claim 2, wherein the mounting plate is provided with a plurality of connection sites arranged in sequence along the second direction, and any compression assembly is detachably connected with any connection site.

4. The pressing device as claimed in claim 3, wherein each of the connecting positions has at least two sets of connecting holes, and the pressing device further comprises a connecting member, which can be inserted into any one of the pressing members and connected to the connecting holes of any one of the connecting positions.

5. The compression device of claim 2, wherein any of the compression assemblies includes an adjusted state and a secured state;

when the compaction assembly is in the adjustment state, the compaction assembly can move back and forth along the second direction;

when the hold-down assembly is in the secured state, the hold-down assembly is secured relative to the mounting plate.

6. The compression device of claim 1, wherein the compression assembly further comprises at least two guide posts, each guide post being connected to the mount, each compression pin being reciprocally movably connected to the corresponding guide post along the first direction.

7. The compression device of claim 1, wherein the compression assembly further comprises at least two resilient members, each resilient member being connected between the mounting base and a corresponding one of the compression pins for providing a resilient force for urging the compression surface of the compression pin away from the mounting base.

8. A welding machine, characterized in that it comprises a pressing device according to any one of claims 1 to 7.

9. The welding machine of claim 8, wherein the clamping device further comprises a mounting plate, the welding machine further comprising a cantilever assembly and a hot air member, the cantilever assembly being coupled to the mounting plate, the hot air member being coupled to the cantilever assembly for blowing hot air toward the weld point.

10. The welding machine of claim 9, wherein the hot air member includes an adjusted state and a secured state;

when the hot air piece is in the adjusting state, the hot air piece can move in a reciprocating mode along a second direction perpendicular to the first direction;

when the hot air piece is in the fixed state, the hot air piece is fixed relative to the cantilever assembly.

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