CN219274980U

CN219274980U - Assembly jig and laser welding equipment

Info

Publication number: CN219274980U
Application number: CN202320729170.8U
Authority: CN
Inventors: 王昶; 詹舒嘉
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-06-30
Anticipated expiration: 2033-04-06

Abstract

The application provides an assembly jig and laser welding equipment, assembly jig include base, assembly frame and welding apron, and the base is equipped with supporting part, forms in the assembly frame and is used for arranging a plurality of battery monomer's cavity, and the assembly frame is equipped with just to and link up the opening of cavity, and assembly frame rotationally connects in supporting part to make the assembly frame rotate in the plane of perpendicular to base. The welding cover plate is provided with a through hole for the laser beam to pass through, and the welding cover plate is used for detachably covering the opening of the assembly frame. The assembly fixture that this application embodiment provided all accessible in assembly, upset and welded process of battery need not to change frock, and easy operation is convenient, has improved production efficiency.

Description

Assembly jig and laser welding equipment

Technical Field

The application belongs to the technical field of batteries, and more specifically relates to an assembly fixture and a laser welding device.

Background

The soft-package battery has the advantages of light weight, long cycle life, good safety performance, high energy density, low cost and the like, and is widely applied to various fields such as electric bicycles, electric motorcycles, electric automobiles, solar photovoltaic power generation systems, wind power generation systems, mobile communication base stations, large server standby power supplies, emergency lighting, portable mobile power supplies, mine safety equipment and the like. In the process of assembling the soft package battery, the soft package battery monomers are arranged and bound together in a tilting posture with the lugs transversely arranged and the side faces serving as supporting faces, then the bound battery is turned over, and then welding points, which are needed to be welded, of the battery are welded. Therefore, the assembly, the overturning and the welding of the soft-package battery are respectively independent procedures, the actual operation is complicated and time-consuming, and the production efficiency is low.

Disclosure of Invention

An aim of the embodiment of the application is to provide an assembly fixture and laser welding equipment to solve the problem that the assembly, the upset and the welding of soft packet of battery independently go on respectively, complex operation, production efficiency are low.

In a first aspect, an embodiment of the present application provides an assembly fixture, the assembly fixture is used for assembling a battery, the assembly fixture includes a base, an assembly frame and a welding cover plate, the base is equipped with a supporting part, form in the assembly frame and be used for arranging a plurality of battery monomer's cavity, the assembly frame is equipped with just to and link up the opening of cavity, the assembly frame rotationally connects in the supporting part, so that the assembly frame rotates in the plane of perpendicular to base, the welding cover plate is equipped with the through-hole that supplies the laser beam to pass through, the welding cover plate is used for detachably lid to close in the opening of assembly frame.

In the technical scheme that this application embodiment provided, through rotationally connecting the assembly frame in the supporting part of base, form the cavity that is used for arranging a plurality of battery cells in the assembly frame, welding apron detachably lid closes in the opening of assembly frame, when assembling the battery, arrange the battery cell in the cavity of assembly frame with the utmost point ear transverse arrangement earlier, the side is the toppling over gesture of holding surface and bind the assembly, then rotate the assembly frame in the plane of perpendicular to base for the opening of assembly frame up, the battery cell changes the vertical upright gesture of utmost point ear upwards, push the assembly jig into laser welding machine afterwards, the laser beam accessible welding apron that laser welding machine penetrated welds the through-hole on, thereby weld the welding point on the battery cell. Therefore, the assembly, overturning and welding processes of the battery can be realized through the assembly fixture provided by the embodiment of the application, a conversion fixture is not needed, the operation is simple and convenient, and the production efficiency is improved.

In some embodiments, the assembly fixture includes tab spacers for detachably mounting to the openings of the assembly frame, the tab spacers having a plurality of spaced apart notches, each notch for respectively receiving a tab of a battery cell in the cavity in a one-to-one correspondence.

Through setting up the utmost point ear separator, the utmost point ear separator is equipped with a plurality of interval distribution's notch, and each notch is used for holding the free utmost point ear of battery in the cavity in a one-to-one correspondence respectively to keep apart each free utmost point ear of battery, reduce the risk of two adjacent free utmost point ear overlap joint short circuits.

In some embodiments, the tab separator comprises a connecting rod and a plurality of isolation structures connected to the connecting rod, wherein a notch is respectively arranged on one side of each isolation structure facing the cavity.

Through connect a plurality of isolation structures that have the notch on the connecting rod to hold each battery cell's utmost point ear correspondingly in proper order through each isolation structure, thereby reduce the risk of adjacent two battery cell's utmost point ear overlap joint short circuit.

In some embodiments, the isolation structure comprises two isolation blocks, the two isolation blocks are arranged opposite to each other, the opposite side parts of the two isolation blocks are respectively provided with a first surface and a second surface which are not at the same height, the two first surfaces are fixed in a fitting way, and a notch is formed between the two second surfaces.

Through setting up first surface and the second surface at the spacer, the first surface laminating of two spacer is fixed, forms the notch between the second surface of two spacer, can be convenient for the manufacturing of isolation structure like this and form the notch in isolation structure.

In some embodiments, the isolation structure is slidably connected to the connecting rod.

Through connecting each isolation structure in the connecting rod in a sliding manner, each isolation structure can be slid flexibly, the lugs of the battery monomers are inserted into the notches of the isolation structures, and the positions of the isolation structures can be adjusted flexibly according to the sizes of different battery monomers and the distances between two adjacent lugs.

In some embodiments, each isolation structure is provided with two notches distributed at intervals, and the two notches arranged on the same isolation structure are respectively used for accommodating two lugs of the same battery cell.

Through setting up two interval distribution's notch at each isolation structure, two notches can hold two single battery's of same battery respectively corresponding, can make the notch distribution of all isolation structures and the single battery's of all battery distribute unanimously like this, can keep apart all single battery's of battery through the utmost point ear separator correspondingly.

In some embodiments, the tab separator includes a barrier strip having a channel between two notches of the separator structure, the barrier strip snapping into each channel to separate the two notches on the same separator structure.

Through setting up the blend stop for two notch of isolation structure do not communicate, thereby can reduce the risk of clamping into two utmost point ear overlap joint short circuits of same isolation structure.

In some embodiments, a portion of the barrier rib protrudes outside the channel in a direction parallel to the slot

The part of the barrier strip protrudes out of the channel, so that the barrier strip can be conveniently disassembled and assembled.

In some embodiments, the tab separator includes two connection blocks, one end of the connection rod is connected to one of the connection blocks, the other end of the connection rod is connected to the other connection block, and the two connection blocks are respectively detachably mounted at two ends of the opening.

Through setting up two connecting blocks to be convenient for install the utmost point ear isolator detachably in the open-ended border of assembly frame, also be convenient for the manufacturing of utmost point ear isolator.

In some embodiments, one end of the barrier is connected to one of the connection blocks and the other end of the barrier is connected to the other connection block.

The baffle strips, the connecting rods and the isolation structure are connected into a whole through the connecting blocks, so that the manufacturing of the lug isolation piece is facilitated.

In some embodiments, the assembly fixture comprises a plastic support, the plastic support comprises a first rod portion and a plurality of first tooth portions, each first tooth portion is arranged at intervals and connected to the first rod portion respectively, the first rod portion is used for being detachably mounted in the opening, and the first tooth portions are used for being inserted between two adjacent lugs of two adjacent battery cells in the cavity.

Through setting up plastic support piece, each first tooth portion of plastic support piece can be used to insert between the utmost point ear of two adjacent battery monomer to can lead to the correction to the utmost point ear that warp.

In some embodiments, the assembly fixture comprises a positioning piece, the positioning piece comprises a second rod portion and a plurality of second tooth portions, all the second tooth portions are arranged at intervals and connected to the second rod portion, the second rod portion is used for being detachably mounted on the opening, and the second tooth portions are used for being inserted into clamping grooves of the wire harness isolation plate located on the end face of the tab of the battery unit.

Through setting up the setting element, each second tooth portion of setting element can be used to insert the draw-in groove of pencil division board to can play support and locate action to the pencil division board.

In some embodiments, the through hole has a first end and a second end, the opening of the first end is smaller than the opening of the second end, and the first end is arranged on the side of the welding cover plate facing the assembly frame.

The opening of the first end of the through hole is smaller than the opening of the second end, so that the second end with the larger opening is beneficial to the laser beam emitted by the laser welding machine to enter the through hole during laser welding, the requirement on the emission angle of the laser beam is avoided to be too high, and the alignment of the laser beam and the welding point during welding operation is also facilitated; the first end with the smaller opening can facilitate the laser beam to be converged and accurately focused to the welding point on the battery cell, so that the welding quality is improved.

In some embodiments, the aperture rim of the through-hole at the first end protrudes from the surface of the welded cover plate.

Through setting the border of the first end of through-hole to the protrusion in the surface of welding apron to when the opening of welding apron lid in the assembly frame, the border of the first end of through-hole can compress tightly around the welding point on the battery monomer that is located the cavity, thereby be convenient for at laser welding's in-process, laser beam and welding point counterpoint, the border of first end also can isolate the heat of laser beam moreover, reduces the heat diffusion of laser beam and scalds the risk of other structures beyond the welding point.

In some embodiments, the mounting fixture includes a drive motor having an output shaft coupled to the mounting frame to drive rotation of the mounting frame.

Through setting up the driving motor who is connected with the assembly frame, accessible driving motor drive assembly frame and arrange the battery in the assembly frame and rotate.

In some embodiments, the assembly fixture is further provided with a hand crank, and a rotating shaft of the hand crank is connected with the assembly frame.

Through setting up the hand crank, can be convenient for manual rotation assembly frame and arrange the battery in the assembly frame, rotation speed is slowly controllable.

In some embodiments, the assembly fixture comprises a latch, the handle is mounted on the support portion, the handle is provided with a first jack, one of the support portions is provided with a plurality of second jacks distributed around the rotating shaft of the handle at intervals, the latch is detachably inserted into the first jack and one of the second jacks, the latch is operatively inserted into the first jack and one of the second jacks, so that the assembly frame is maintained in a corresponding state, and the openings face different directions when the assembly frame rotates to different states.

Through setting up first jack at the handle, one of them supporting part is equipped with a plurality of second jacks that encircle the pivot interval distribution of handle, rotates the handle and after to different positions, inserts the bolt and locates first jack and one of them second jack that corresponds to can maintain the assembly frame in different states.

In some embodiments, the assembly frame includes a bottom plate, a detachable plate and two side plates, the two side plates are arranged at intervals and are respectively connected to two ends of the bottom plate, the detachable plate is detachably connected between the two side plates, the bottom plate, the detachable plate and the two side plates enclose to form a cavity, and the detachable plate is located on one side opposite to the opening.

Through setting up the removable plate, can be convenient for put into the cavity with a plurality of battery monomers from the side opposite with the opening to pass between two adjacent first tooth portions with battery monomer's utmost point ear, then block into the notch of utmost point ear isolator, utmost point ear isolator and plastic support piece can not interfere the process that battery monomer put into the cavity.

In some embodiments, the removable plate is provided with a plurality of arcuate recesses arranged in sequence and adapted to the bottom surface of the battery cells.

Through the arc recess that sets up a plurality of and arrange in proper order and with battery monomer bottom surface looks adaptation at the detachable plate for form arc contact between the bottom surface of soft packet of battery and the detachable plate, thereby improve the utmost point post plane degree of battery after the equipment.

In some embodiments, the base plate is provided with slots for the straps to pass through.

Through the slot that supplies the ribbon to pass through in the bottom plate setting, can be convenient for pass the slot of bottom plate and around battery monomer a week through the ribbon to bind battery monomer.

In some embodiments, the assembly fixture includes a lead screw, the assembly frame further includes a slide plate slidably mounted between the two side plates, the cavity is formed between the slide plate and one of the side plates, and one end of the lead screw passes through the other side plate and abuts against the slide plate.

By arranging the lead screw, the battery monomer in the cavity can be compressed.

In a second aspect, an embodiment of the present application provides a laser welding apparatus, where the welding apparatus includes the assembly fixture and the laser welding machine of any one of the embodiments, and a laser beam emitted from the laser welding machine passes through a through hole of the welding cover plate and welds the battery cell.

The laser welding device provided by the embodiment of the application also has the technical effects of any one of the embodiments due to the fact that the laser welding device comprises the assembly fixture of any one of the embodiments.

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

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

FIG. 1 is an exploded view of an assembly fixture provided in an embodiment of the present application;

fig. 2 is a schematic perspective view of an assembly fixture according to an embodiment of the present application, viewed from one side in a first state;

fig. 3 is a schematic perspective view of an assembly fixture according to an embodiment of the present application, viewed from the other side in a first state;

fig. 4 is a schematic perspective view of an assembly jig according to an embodiment of the present application in a second state, viewed from the top;

fig. 5 is a schematic perspective view of an assembly fixture in a second state according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of the assembly fixture according to the embodiment of the present application, from one side in a second state;

FIG. 7 is a schematic view of the assembly fixture according to the embodiment of the present application, from the other side in a second state;

fig. 8 is a schematic perspective view of a tab separator of an assembly fixture according to an embodiment of the present disclosure from one perspective;

fig. 9 is a schematic perspective view of a tab separator of an assembly fixture according to an embodiment of the present disclosure from another side;

FIG. 10 is a side view of a tab separator of an assembly fixture provided in an embodiment of the present application, from one side;

FIG. 11 is an exploded view of a tab separator of an assembly fixture provided in an embodiment of the present application;

fig. 12 is a schematic perspective view of an isolation structure of a tab separator according to an embodiment of the present disclosure;

FIG. 13 is an exploded view of the isolation structure of FIG. 12;

fig. 14 is a schematic perspective view of a shaping support of an assembly jig according to an embodiment of the present application;

fig. 15 is a schematic perspective view of a positioning member of an assembly fixture according to an embodiment of the present application.

Wherein, each reference sign in the figure:

1-assembling a clamp; 11-a base; 111-a support; 1111-a second jack; 12-assembling a frame; 121-a cavity; 122-opening; 123-a bottom plate; 1231-slot; 124-removable plate; 125-side plates; 126-skateboard; 13-welding a cover plate; 131-through holes; 132-a first end; 133-a second end; 14-tab separators; 141-notch; 142-connecting rods; 143-isolation structures; 1431-spacer blocks; 1432-a first surface; 1433-a second surface; 144-bars; 145-channels; 146-connecting blocks; 15-plastic support; 151-a first stem; 152-first teeth; 16-positioning piece; 161-a second stem; 162-second teeth; 17-a drive motor; 171-hand crank; 1711-a first jack; 18-a bolt; 19-a lead screw;

100-battery cells; 200-harness isolation plates; 300-ribbon.

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," etc. are used merely to distinguish between different objects and are not to 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, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

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

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element 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 are to 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.

When the square battery and the cylindrical battery are assembled, the battery is generally assembled in a vertical posture in which the lugs of the battery cells are vertically upward and the bottom surface opposite to the lugs is used as a supporting surface. But the bottom of the pouch battery is curved and cannot be assembled in a state in which the tab is vertically upward. Therefore, when the soft package battery is assembled, the soft package battery is turned over for 90 degrees, namely the soft package battery is transversely arranged by the lugs, and the soft package battery is arranged and assembled in a tilting posture with the side faces serving as supporting surfaces; after a plurality of battery monomers are arranged, binding the battery monomers together through a binding belt; then all the bound battery cells need to be turned over by 90 degrees, so that the battery cells are converted into an upright posture with the lugs facing upwards vertically; finally, pushing all assembled battery monomers into a laser welding machine to weld each tab; and taking out the battery after the welding is finished. Therefore, the assembly, the overturning and the welding of the soft-package battery are respectively independent procedures, the actual operation process is complex and time-consuming, and the production efficiency is low.

To the above-mentioned problem, can design an assembly jig for assembling battery, assembly jig includes base, assembly frame and welding apron, has in the assembly frame and is used for arranging the free cavity of battery, and assembly frame rotationally installs in the base to can overturn the assembly frame with arrange in the inside battery monomer of assembly frame. The welding cover plate is detachably covered on the assembly frame and is provided with a through hole through which the laser beam can pass, so that welding points of all battery monomers in the assembly frame can be welded conveniently.

The assembly fixture provided by the embodiment of the application can be applied to the assembly process of batteries, is particularly suitable for the assembly of soft-package batteries, and is a battery assembly fixture with the functions of assembling, overturning and welding a collector. However, the application of the assembly jig is not limited to the assembly of the pouch cell, but may be applied to the assembly of the square cell and the cylindrical cell. The embodiment of the application also provides laser welding equipment comprising the assembly fixture.

In a first aspect, as shown in fig. 1, an embodiment of the present application provides an assembly jig 1, the assembly jig 1 is used for assembling a battery, and the assembly jig 1 includes a base 11, an assembly frame 12, and a welding cover 13. The base 11 is provided with a support 111, a cavity 121 for arranging a plurality of battery cells 100 is formed in the assembly frame 12, and the assembly frame 12 is provided with an opening 122 facing and penetrating the cavity 121. The fitting frame 12 is rotatably connected to the supporting portion 111 such that the fitting frame 12 rotates in a plane perpendicular to the base 11. The weld cover 13 is provided with a through hole 131 for passing the laser beam, and the weld cover 13 is for detachably covering the opening 122 of the fitting frame 12.

The base 11 is a supporting structure of the whole assembly fixture 1, and the assembly frame 12 and the welding cover plate 13 are arranged on the base 11.

The assembly frame 12 has a cavity 121 therein, and the cavity 121 is used for arranging a plurality of battery cells 100. One side of the mounting frame 12 is provided with an opening 122. The opening 122 is opposite to the cavity 121 and penetrates the cavity 121. The fitting frame 12 is mounted to the support portion 111 of the base 11, and in particular, the fitting frame 12 is rotatably connected to the support portion 111 such that the fitting frame 12 can be rotated about a rotation axis in a plane perpendicular to the base 11.

The mounting frame 12 has at least a first state and a second state, and the openings 122 are oriented in different directions when the mounting frame 12 is in different states. Specifically, as shown in fig. 2 and 3, in the first state, the plurality of battery cells 100 may be arranged in the cavity 121 of the fitting frame 12 in a tab lateral direction, with the side surface being the tilting posture of the supporting surface. In the first state, the fitting frame 12 is rotatable to the second state. As shown in fig. 4 to 7, in the second state, the opening 122 is vertically upward, and at this time, the battery cells 100 arranged in the cavity 121 are in an upright posture with the tabs vertically upward, and each battery cell 100 in the cavity 121 can be welded. In the second state, the fitting frame 12 is rotatable to the first state.

As shown in the coordinate system of fig. 3, the direction shown in the X-axis is the longitudinal direction of the base 11, the direction shown in the Y-axis is the width direction of the base 11, and the direction shown in the Z-axis is the height direction of the assembly jig 1. The direction shown by the Z axis is vertical, and the direction vertical to the Z axis is horizontal. The vertically upward-facing posture of the tab of the battery cell 100 is an upright posture, as shown in fig. 4 to 7, in which the bottom surface opposite to the tab serves as a support surface of the battery cell 100. The battery cell 100 in the upright posture is turned over by 90 degrees to be in the toppling posture, and as shown in fig. 2 and 3, the tabs of the battery cell 100 are laterally arranged at this time, and the surface adjacent to the bottom surface of the battery cell 100 is a side surface having a supporting function.

The welded cover 13 is detachably connected to the mounting frame 12 and covers the opening 122 of the mounting frame 12. As shown in fig. 1 and 5, the welding cap plate 13 is provided with through holes 131 through which the laser beam passes, and the positions and the number of the through holes 131 correspond to the positions and the number of the welding points of the respective battery cells 100 in the cavity 121. Specifically, the through holes 131 may correspond to the welding points of the battery cells 100 one by one; alternatively, one through hole 131 may correspond to a plurality of bonding points, and the area of the through hole 131 may cover the plurality of bonding points. As shown in fig. 5 to 7, when the fitting frame 12 is in the second state, the welding cover 13 is covered on the opening 122 of the fitting frame 12, and the through holes 131 of the welding cover 13 can be aligned with the welding points of the respective battery cells 100, so that the laser welding machine emits the laser beam to perform the laser welding operation on the battery cells 100 through the through holes 131.

Since the laser beam itself has a bell-mouth shape and a certain size, the "the welding cover 13 is provided with the through hole 131 through which the laser beam passes" means that the through hole 131 can be completely penetrated by the laser beam after the laser beam is injected into the through hole 131, and the hole wall and the like thereof do not interfere with the passage of the laser beam.

The process of assembling the battery using the assembly jig 1 is as follows: when the fitting frame 12 is in the first state, as shown in fig. 2 and 3, the plurality of battery cells 100 are arranged in the tab lateral direction, and the toppling posture with the side surface as the supporting surface is sequentially put into and arranged in the cavity 121 of the fitting frame 12. When the battery cells 100 are placed, a heat insulating mat may be placed between two adjacent battery cells 100, that is, the battery cells 100 and the heat insulating mat are placed in the cavity 121 in the order of "heat insulating mat-battery cell 100-heat insulating mat". After all the battery cells 100 are placed, the battery cells 100 are bound together, such as by a tie, etc. Then the assembly frame 12 is rotated to be adjusted from the first state to the second state, as shown in fig. 4, so that the tabs of the battery cells 100 are converted into a vertical-up upright posture; after the tabs and the like are processed and treated, as shown in fig. 5 to 7, the welding cover 13 is then covered on the opening 122 of the assembly frame 12, and the through holes 131 of the welding cover 13 correspond to the positions of the welding points of the respective battery cells 100. Finally, the whole assembly fixture 1 is pushed into a laser welding machine, a laser beam is emitted to the assembly frame 12 by the laser welding machine, and the laser beam is projected onto the welding point of the battery cell 100 through the through hole 131 on the welding cover plate 13, so that the battery cell 100 is welded. After the welding is completed, the entire assembly jig 1 is pushed out of the laser welding machine, the welded cover 13 is detached from the position of the opening 122 of the assembly frame 12, and the welded battery is taken out of the cavity 121.

It should be noted that, in actual use, the rotatable angle range of the mounting frame 12 may be 90 ° according to actual needs, but is not limited to 90 °. For example, for a battery module that is to be welded on both opposite sides, the rotatable angle of the mounting frame 12 may be 180 °, i.e., the mounting frame 12 may be completely upside down, which may facilitate the welding of the opposite sides of the battery module, respectively. For another example, the rotatable angle range of the assembly frame 12 may be 360 °, so that the assembly frame 12 may be rotated 360 ° to make the assembly frame 12 rotate for one turn, so that the binding band is conveniently wound around the whole of all the battery cells 100 and both ends of the binding band are fixed, thereby binding the arranged battery cells 100. In addition, the assembly fixture 1 is not limited to be used for welding the tabs of the battery cells 100, and other welding points of the battery cells 100 can be welded according to different structures of the battery cells 100 and different designs of the through holes 131 of the welding cover plate 13. In practical application, a plurality of different welding cover plates 13 can be designed according to the needs, so that the corresponding welding cover plates 13 can be selected according to the different structures of the battery cells 100 to be welded and are covered on the assembly frame 12.

In the technical scheme provided by the embodiment of the application, through rotationally connecting the assembly frame 12 to the supporting part 111 of the base 11, the cavity 121 for arranging a plurality of battery monomers 100 is formed in the assembly frame 12, the welding cover plate 13 is detachably covered on the opening 122 of the assembly frame 12, when the battery is assembled, the battery monomers 100 are firstly arranged in the cavity 121 of the assembly frame 12 in a tilting posture with the lugs transversely arranged and the side faces serving as supporting surfaces and are bound and assembled, then the assembly frame 12 is rotated, the opening 122 of the assembly frame 12 faces upwards, the battery monomers 100 are converted into a vertical upwards standing posture with the lugs, then the whole assembly fixture 1 is pushed into the laser welding machine, and the laser beam emitted by the laser welding machine can pass through the through holes 131 on the welding cover plate 13, so that welding points on the battery monomers 100 are welded. Therefore, the assembling, overturning and welding processes of the battery can be realized through the assembling fixture 1 provided by the embodiment of the application, a conversion tool is not needed, the operation is simple and convenient, and the production efficiency is improved.

In some embodiments, the base 11 includes a support plate and two support portions 111, where the two support portions 111 are vertically connected to the support plate, and the two support portions 111 are spaced apart from two ends of the support plate. The mounting frame 12 is a structure formed by enclosing a plurality of plates. Both ends of the fitting frame 12 are rotatably connected between the two supporting portions 111, respectively. The fitting frame 12 is supported by the two supporting portions 111, so that the fitting frame 12 can be kept stable.

In some embodiments, the two supporting portions 111 are provided with mounting holes, the two ends of the assembly frame 12 are correspondingly connected with the two supporting portions 111 through two rotating shafts respectively, each rotating shaft penetrates through the mounting hole of one supporting portion 111 and the mounting hole of one end of the assembly frame 12, and bearings can be arranged at the positions of the mounting holes of the supporting portions 111 and the mounting holes of the assembly frame 12 so as to facilitate connection between the rotating shaft and the supporting portion 111 and connection between the rotating shaft and the assembly frame 12, and thus, smooth rotation of the assembly frame 12 around the rotating shaft can be facilitated.

In some embodiments, both ends of the welding cover plate 13 are detachably connected with both ends of the opening 122 by bolts. In this way, the welded cover 13 is firmly connected to the mounting frame 12.

In some embodiments, the edge of the welding cover 13 is provided with a plurality of spaced plug-in posts, the edge of the opening 122 of the assembly frame 12 is correspondingly provided with a plurality of spaced insertion holes, and the welding cover 13 is covered on the opening 122 of the assembly frame 12, so that the plug-in posts are correspondingly inserted into the insertion holes one by one, and the welding cover 13 is detachably covered on the assembly frame 12. Therefore, the welded cover plate 13 and the assembly frame 12 are not required to be connected through other parts, and the operation is simple and convenient.

In some embodiments, the assembly fixture 1 includes tab spacers 14, the tab spacers 14 are configured to be detachably mounted to the openings 122 of the assembly frame 12, and the tab spacers 14 are provided with a plurality of slots 141 spaced apart, each slot 141 being configured to receive a tab of the battery cell 100 in the cavity 121 in a one-to-one correspondence.

As shown in fig. 3, the tab separator 14 is configured to be detachably mounted to the mounting frame 12, for example, both ends of the tab separator 14 may be detachably connected to edges of the opening 122 of the mounting frame 12 by screws. Referring again to fig. 8, the tab separator 14 is provided with a plurality of notches 141, all of which 141 face the tabs of the battery cells 100 in the cavity 121. All the notches 141 are distributed at intervals, and the distance between two adjacent notches 141 is matched with the distance between two lugs of two adjacent battery monomers 100, so that the lugs of each battery monomer 100 can be inserted into the notches 141 of the lug isolating piece 14 in a one-to-one correspondence manner, and each lug is contained in the notch 141, so that the lugs of each battery monomer 100 are isolated, and the risk of short circuit of the two lugs of two adjacent battery monomers 100 due to lap joint is reduced.

In assembling the battery, as shown in fig. 3, when the assembly frame 12 is in the first state, the tab separator 14 is first installed at the opening 122 of the assembly frame 12, and then the respective battery cells 100 are sequentially placed and arranged in the cavity 121 of the assembly frame 12. After each battery cell 100 is placed in the cavity 121, the tab of the battery cell 100 needs to be clamped into the notch 141 corresponding to the tab spacer 14, and then the next battery cell 100 is placed, so that the risk of overlap short circuit of the tabs of two adjacent battery cells 100 can be effectively reduced. After all the battery cells 100 are placed, the assembly frame 12 is rotated to the second state, as shown in fig. 4, and then the tab separator 14 is removed, and after the tabs and the like are processed and treated, the welding cover 13 is covered on the opening 122 of the assembly frame 12 for welding.

It can be appreciated that since the tab of the battery cell 100 is soft, the tabs of two adjacent battery cells 100 in the cavity 121 are easily overlapped together during the assembly of the battery, thereby causing a short circuit. Through setting up utmost point ear spacer 14, utmost point ear spacer 14 is equipped with a plurality of interval distribution's notch 141, and notch 141 is used for holding the utmost point ear of battery monomer 100 in cavity 121 to effectively keep apart the utmost point ear of each battery monomer 100, reduce the risk that the overlap joint of the utmost point ear of two adjacent battery monomers 100 caused the short circuit.

In some embodiments, the tab separator 14 includes a connection rod 142 and a plurality of isolation structures 143 connected to the connection rod 142, and a side of each isolation structure 143 facing the cavity 121 is provided with a notch 141.

As shown in fig. 8 to 10, the tab separator 14 includes a connection rod 142 and a plurality of separation structures 143 connected to the connection rod 142. The two ends of the connection rod 142 are detachably connected to the two ends of the fitting frame 12. Specifically, for example, the connecting rod 142 may be inserted into two end edges of the opening 122. Alternatively, connecting blocks are respectively provided at both ends of the connecting rod 142, and the connecting blocks may be detachably connected to both end edges of the opening 122 by screws or the like.

All isolation structures 143 are connected to the connecting rod 142. For example, the isolation structures 143 may be provided with through holes penetrating through themselves, and the connection bars 142 sequentially pass through the through holes of the respective isolation structures 143, thereby connecting all the isolation structures 143 to the connection bars 142. The side of each of the isolation structures 143 facing the inside of the cavity 121 is provided with the notch 141 such that the tabs of each of the battery cells 100 arranged in the cavity 121 can be inserted into the notches 141 of the isolation structures 143 in a one-to-one correspondence.

By connecting a plurality of isolation structures 143 with notches 141 on the connecting rod 142, the tabs of each battery cell 100 are correspondingly accommodated in sequence through each isolation structure 143, so that the risk of overlap short circuit of the tabs of two adjacent battery cells 100 is reduced.

Alternatively, in the illustrated embodiment, the number of the connection rods 142 is two, each isolation structure 143 is provided with two through holes which penetrate through itself and are distributed at intervals, one connection rod 142 is inserted into one through hole of the isolation structure 143, and the other connection rod 142 is inserted into the other through hole of the isolation structure 143, so that all the isolation structures 143 are sleeved on the two connection rods 142, which can enhance the connection stability between the connection rods 142 and the isolation structures 143, and can limit the isolation structures 143 to slide only along the connection rods 142 but not rotate around the connection rods 142.

In some embodiments, the isolation structure 143 includes two isolation blocks 1431, the two isolation blocks 1431 are disposed opposite to each other, the opposite sides of the two isolation blocks 1431 have a first surface 1432 and a second surface 1433 that are not at the same height, respectively, and the two first surfaces 1432 are fixed in a fitting manner, and the notch 141 is formed between the two second surfaces 1433.

As shown in fig. 11 to 13, the isolation structure 143 includes two symmetrically attached isolation blocks 1431, and each isolation block 1431 has a first surface 1432 and a second surface 1433 on one side, and the first surface 1432 and the second surface 1433 are not at the same height, so that a step is formed on one side of the isolation block 1431. Wherein the first surface 1432 is convex with respect to the second surface 1433. The two stepped sides of the two spacer blocks 1431 are opposite to each other, and the two first surfaces 1432 are adhered and fixed, and the notch 141 for accommodating the tab is formed between the two second surfaces 1433.

Alternatively, the first surface 1432 and the second surface 1433 are two planes parallel to each other, which can facilitate the manufacture of the isolation structure 143, and also can form the regular notch 141 so that the tab can be smoothly inserted into the notch 141.

By providing the first surface 1432 and the second surface 1433, which are not at the same height, on one side of the isolation block 1431, the first surfaces 1432 of the two isolation blocks 1431 are adhered and fixed, so that the notch 141 is formed between the second surfaces 1433 of the two isolation blocks 1431, thus facilitating the manufacture of the isolation structure 143 and forming the notch 141 in the isolation structure 143.

In some embodiments, isolation structure 143 is slidably coupled to connecting rod 142.

As shown in fig. 9, each isolation structure 143 is provided with a through hole penetrating through itself, and the connection rod 142 sequentially penetrates through the through holes of each isolation structure 143, so that each isolation structure 143 is slidably sleeved on the connection rod 142, and the isolation structures 143 can slide along the connection rod 142. When assembling the battery, after one battery cell 100 is placed in the cavity 121, one isolation structure 143 is shifted to a corresponding position and the tab of the battery cell 100 is clamped into the notch 141 of the isolation structure 143, and then the next battery cell 100 and the isolation structure 143 are placed.

By slidably connecting each of the isolation structures 143 to the connection rod 142, each of the isolation structures 143 can be flexibly slid and the tabs of the battery cells 100 can be caught in the notches 141 of the isolation structures 143, and the positions of the isolation structures 143 can be flexibly adjusted according to the sizes of the respective different battery cells 100 and the distances between the adjacent two tabs.

In some embodiments, each isolation structure 143 is provided with two notches 141 that are spaced apart, and the two notches 141 provided in the same isolation structure 143 are respectively configured to receive two tabs of the same battery cell 100.

Since each battery cell 100 has two tabs spaced apart, it is necessary to insert the two tabs of the battery cell 100 into the two slots 141, respectively. As shown in fig. 8, each isolation structure 143 is provided with two notches 141, the two notches 141 are distributed at intervals, and the positions and the intervals of the two notches 141 correspond to the positions and the intervals of the two tabs of the battery cell 100.

Through setting up two interval distribution's notch 141 at each isolation structure 143, two notches 141 can insert two tabs of same battery monomer 100 respectively correspondingly, can make the notch 141 distribution of all isolation structure 143 unanimous with the tab distribution of all battery monomers 100 like this, can keep apart the tab of all battery monomers 100 through the tab isolator 14.

In some embodiments, the tab separator 14 further includes a barrier strip 144 having a channel 145 between the two notches 141 of each separator 143, the barrier strip 144 snapping into each channel 145 to isolate the two notches 141 of the same separator 143.

As shown in fig. 11, the tab separator 14 includes barrier ribs 144, and all the separation structures 143 are sequentially arranged along the length direction of the connection rod 142. Each isolation structure 143 has a channel 145 between two slots 141, the channel 145 extending through the isolation structure 143 along the length of the connecting rod 142. The channels 145 of each isolation structure 143 are interconnected along the length of the connecting rod 142 such that all of the channels 145 of the isolation structure 143 are in turn interconnected to form a longer channel. The bars 144 can be snapped into the through-going channels 145, i.e. the bars 144 are threaded into the channels 145 of all the isolation structures 143, thereby isolating the two notches 141 of each isolation structure 143.

In other embodiments, the channels 145 of the isolation structures 143 may not be connected, in which case the side of the barrier strip 144 facing the channels 145 is stepped, and the barrier strip 144 can be snapped into the channels 145 of the isolation structures 143.

By providing the barrier strips 144 such that the two notches 141 of the isolation structure 143 are not in communication, the risk of overlapping short circuits of two tabs of the same battery cell 100 inserted into the same isolation structure 143 is reduced.

In some embodiments, a portion of the bars 144 protrude outside of the channel 145 in a direction parallel to the slots 141.

As shown in fig. 10 and 11, a portion of the barrier rib 144 can protrude outside the channel 145 in a direction parallel to the notch 141, so that the barrier rib 144 can be easily disassembled.

In some embodiments, the tab separator 14 further includes two connection blocks 146, one end of the connection rod 142 is connected to one of the connection blocks 146, the other end of the connection rod 142 is connected to the other connection block 146, and the two connection blocks 146 are respectively detachably mounted at both ends of the opening 122.

As shown in fig. 8 and 11, the connection block 146 is provided with a through hole through which the connection rod 142 passes. The both ends of the connection rod 142 pass through the through holes of the two connection blocks 146, respectively. One end of the connecting rod 142 is connected to one of the connection blocks 146, and the other end of the connecting rod 142 is connected to the other connection block 146, so that the connecting rod 142 is located between the two connection blocks 146.

The connection block 146 is further provided with at least one plug-in post, for example, in the illustrated embodiment, the connection block 146 is provided with two plug-in posts spaced apart. The two end edges of the assembly frame 12, which are positioned at the opening 122, are respectively provided with a jack correspondingly. The insertion posts on the two connection blocks 146 are inserted into the insertion holes at the edges of the two ends of the opening 122 in a one-to-one correspondence manner, so that the two ends of the entire tab separator 14 are detachably mounted to the mounting frame 12 through the two connection blocks 146, respectively.

By arranging the two connecting blocks 146, the lug isolator 14 can be conveniently and detachably arranged at the edge of the opening 122 of the assembly frame 12, the lug isolator 14 is integrally detachable, and the disassembly and assembly operations are simpler and more convenient.

In some embodiments, one end of the bar 144 is connected to one of the nubs 146 and the other end of the bar 144 is connected to the other nub 146.

As shown in fig. 8 and 11, both ends of the barrier rib 144 are provided with mounting holes, and both ends of the barrier rib 144 are respectively and correspondingly fixed to the two connection blocks 146 by screws. In other words, one end of the barrier rib 144 is connected to one of the connection blocks 146, and the other end of the barrier rib 144 is connected to the other connection block 146.

Through being connected the both ends of blend stop 144 with two connecting blocks 146 respectively for connecting rod 142, blend stop 144, connecting block 146 form wholly, and tab isolator 14 is wholly dismantled and assembled, and the dismouting operation is simpler convenient.

In some embodiments, the assembly fixture 1 further includes a shaping support 15, where the shaping support 15 includes a first rod portion 151 and a plurality of first tooth portions 152, where each first tooth portion 152 is arranged at intervals and connected to the first rod portion 151, the first rod portion 151 is configured to be detachably mounted at two ends of the opening 122, and the first tooth portion 152 is configured to be inserted between two adjacent lugs of two adjacent battery cells 100 in the cavity 121.

As shown in fig. 1, 3 and 14, the shaping support 15 is generally comb-shaped, and the shaping support 15 includes a first stem portion 151 and a plurality of first tooth portions 152. All the first teeth 152 are vertically connected to the first rod 151, and all the first teeth 152 are arranged at intervals along the length direction of the first rod 151. The first lever portion 151 is for being detachably mounted to both end edges of the opening 122 of the fitting frame 12. Specifically, the two ends of the first rod portion 151 are respectively provided with an insertion hole, and the edges of the two ends of the opening 122 are correspondingly provided with insertion posts, so that the two ends of the first rod portion 151 are sleeved on the insertion posts of the edges of the two ends of the opening 122, and the whole shaping support 15 is detachably mounted on the assembly frame 12, and at this time, the first tooth portion 152 can be inserted between two adjacent lugs of two adjacent battery cells 100 in the cavity 121.

In assembling the battery, as shown in fig. 3, when the assembly frame 12 is in the first state, the shaping support 15 is first mounted to the opening 122 of the assembly frame 12, and then the tab separator 14 is mounted to the opening 122 of the assembly frame 12, so that the tab separator 14 is located on the side of the shaping support 15 away from the cavity 121. Each of the battery cells 100 is then placed and arranged in the cavity 121 of the mounting frame 12 in sequence. After each battery cell 100 is placed in the cavity 121, the tab of the battery cell 100 is penetrated out from between two adjacent first teeth 152 of the plastic support 15, and the tab is inserted into the notch 141 corresponding to the tab separator 14, and then the next battery cell 100 is placed.

By arranging the shaping support 15, each first tooth 152 of the shaping support 15 can be inserted between two adjacent lugs of two adjacent battery cells 100, so that each first tooth 152 can straighten and straighten the deformed lug, and can support and isolate the lugs of the battery cells 100 in the cavity 121. By providing the shaping support 15 and the tab separator 14, the entire area of the tab can be effectively isolated.

In some embodiments, as shown in fig. 1, 4 and 15, the assembly fixture 1 includes a positioning member 16, where the positioning member 16 includes a second rod portion 161 and a plurality of second tooth portions 162, all the second tooth portions 162 are arranged at intervals and connected to the second rod portion 161, the second rod portion 161 is configured to be detachably mounted at two ends of the opening 122, and the second tooth portions 162 are configured to be inserted into clamping grooves of the harness isolation board 200 located at an end face where the tab of the battery cell 100 is located.

As shown in fig. 1, 4 and 15, the positioning member 16 includes a second lever portion 161 and a plurality of second tooth portions 162. All the second teeth 162 are vertically connected to the second rod 161, and all the second teeth 162 are arranged at intervals along the length direction of the second rod 161. The second lever portion 161 is for being detachably mounted to both end edges of the opening 122 of the fitting frame 12. Specifically, the two ends of the second rod portion 161 are respectively provided with an insertion hole, and the edges of the two ends of the opening 122 are correspondingly provided with insertion posts, so that the two ends of the second rod portion 161 are sleeved on the insertion posts of the edges of the two ends of the opening 122, and the whole positioning member 16 is detachably mounted on the edge of the opening 122 of the assembly frame 12, and at this time, the second tooth portion 162 can be inserted into the clamping groove of the harness isolation board 200 in the cavity 121. The wire harness isolation board 200 is used as a part of a battery and is assembled with a plurality of battery cells 100, the wire harness isolation board 200 is located on an end face of each tab of the battery cell 100, the wire harness isolation board 200 is provided with a plurality of slots corresponding to the tabs of each battery cell 100, when the tabs of the battery cells 100 are processed, the tabs of each battery cell 100 need to pass through the slots of the wire harness isolation board 200 from one side of the wire harness isolation board 200 to the other side, and two adjacent tabs passing through the other side are bent and lap-jointed to be fixed. A clamping groove is further formed in one side of the wire harness isolation board 200, and the positioning piece 16 inserted into the clamping groove can position the wire harness isolation board 200.

When the battery is assembled, after the assembly frame 12 is rotated to the second state as shown in fig. 4, the tab separator 14 is removed, and then the harness separator 200 is inserted into the tabs of each battery cell 100, so that the tabs of the battery cells 100 pass through the corresponding slots on the harness separator 200, and then the shaping support 15 is removed and the positioning member 16 is replaced, that is, the positioning member 16 is fixed at the fixed position of the previous shaping support 15, so that the second tooth 162 is inserted into the clamping groove of the harness separator 200, so as to position the harness separator 200, and facilitate the subsequent bending of the tabs of each battery cell 100.

By providing the positioning member 16, the wire harness isolation plate 200 can be effectively supported and positioned.

In some embodiments, the through hole 131 of the welding cover 13 has a first end 132 and a second end 133 opposite to each other, the opening of the first end 132 is smaller than the opening of the second end 133, the first end 132 is disposed on the side of the welding cover 13 facing the mounting frame 12, that is, the first end 132 faces the battery cell 100 when the welding operation is performed on the battery cell 100.

As shown in fig. 1 and 5, the through holes 131 penetrate through the opposite side surfaces of the solder cover 13, i.e., openings at both ends of the through holes 131 are respectively located on the opposite side surfaces of the solder cover 13. The through hole 131 has a first end 132 and a second end 133 at two ends, wherein the first end 132 has a smaller opening and the second end 133 has a larger opening. When the welding cover plate 13 is covered on the assembly frame 12, the first end 132 with the smaller opening faces the battery cell 100, so that during welding, the energy of the laser beam is conveniently collected and accurately focused on the welding point of the battery cell 100, and the second end 133 with the larger opening faces the laser welding machine for generating the laser beam, thereby facilitating the laser beam to enter the through hole 131, avoiding the requirement on the emission angle of the laser beam to be too high, and facilitating the alignment of the laser beam and the welding point during welding operation.

In some embodiments, the aperture of the through-hole 131 increases from the first end 132 to the second end 133, that is, the cross-section of the through-hole 131 tends to increase from the first end 132 with a small opening to the second end 133 with a large opening, but is not limited to remaining continuously increasing. For example, the shape of the through hole 131 is continuously increased from the first end 132 of the smaller opening and then is maintained, so that a cylindrical structure is formed at a position adjacent to the second end 133 of the larger opening, and the through hole 131 is integrally formed in a stepped hole structure formed by splicing a circular table and a cylinder.

The through holes 131 are formed in one of a table shape, a cone shape, a combination shape of the table shape and the column shape or a combination shape of the cone shape and the column shape, and the through holes 131 are formed in a shape with a large opening at one end and a small opening at the other end, so that during laser welding, the second end 133 with a large opening is beneficial to the laser beam emitted by a laser welding machine to enter the through holes 131, the requirement on the emission angle of the laser beam is avoided to be too high, and the alignment of the laser beam and the welding point is facilitated in the welding process; while the smaller open first end 132 may facilitate the collection and precise focusing of the laser beam to the weld on the cell 100, improving the weld quality.

In some embodiments, the aperture edge of the through-hole 131 at the first end 132 protrudes from the surface of the solder cover 13.

As shown in fig. 1, the edge of the opening of the through-hole 131 at the first end 132 protrudes from the surface of the weld cover 13, that is, the surface of the weld cover 13 facing the battery cell 100 has a protrusion. When the welding cover plate 13 is covered on the opening 122 of the assembly frame 12, the protruding orifice edge of the first end 132 of the through hole 131 can press the battery cell 100 from the periphery of the welding point of the battery cell 100, so that the alignment of the laser beam and the welding point is facilitated in the laser welding process, and the welding effect is improved; on the other hand, the bulges can also effectively isolate the heat of the laser beam, so that the risks of heat diffusion of the laser beam and scalding other structures around the welding point are reduced.

In some embodiments, the assembly fixture 1 further includes a driving motor 17, and an output shaft of the driving motor 17 is connected to the assembly frame 12 to drive the assembly frame 12 to rotate.

As shown in fig. 1 and 2, the driving motor 17 is mounted on the supporting portion 111 on the base 11, the end portion of the fitting frame 12 is provided with a through hole, and the output shaft of the driving motor 17 is connected with the through hole of the end portion of the fitting frame 12, so that the driving motor 17 can drive the fitting frame 12 to rotate from the first state to the second state or drive the fitting frame 12 to rotate from the second state to the first state.

Through setting up the driving motor 17 that is connected with the assembly frame 12, accessible driving motor 17 drive assembly frame 12 and arrange the battery in assembly frame 12 and rotate, saved the loaded down with trivial details of manual work rotation assembly frame 12.

In some embodiments, the assembly fixture 1 is further provided with a crank 171, and a rotation shaft of the crank 171 is connected to the assembly frame 12.

The handle 171 is mounted to the side of the support portion 111 facing away from the mounting frame 12. The hand crank 171 is used to manually rotate the fitting frame 12. When the handle 171 is rotated, the fitting frame 12 is driven to rotate from the first state to the second state, or the fitting frame 12 is driven to rotate from the second state to the first state.

By providing the handle 171, it is possible to facilitate manual rotation of the assembly frame 12 and the batteries arranged in the assembly frame 12, with a slow and controllable rotation speed.

In particular, in the illustrated embodiment, the drive motor 17 is a manual gear reducer provided with a crank 171. That is, the handle 171 serves as a part of the drive motor 17. By rotating the handle 171, the manual gear reducer may be caused to rotate the fitting frame 12 from the first state to the second state, or the fitting frame 12 from the second state to the first state. By employing a manual gear reducer, the rotational accuracy of the fitting frame 12 can be controlled easily.

In some embodiments, the assembly fixture 1 further includes a latch 18, the handle 171 is mounted on the support portion 111, the handle 171 is provided with a first insertion hole 1711, the support portion 111 provided with the handle 171 is provided with a plurality of second insertion holes 1111 spaced around a rotation axis of the handle 171, the latch 18 is operatively inserted into the first insertion hole 1711 and one of the second insertion holes 1111 to maintain the assembly frame 12 in a corresponding state, and the opening 122 faces different directions when the assembly frame 12 is rotated to different states. As shown in fig. 5, the handle 171 is provided with a first insertion hole 1711 penetrating through the handle 171, the support portion 111 provided with the handle 171 is provided with a plurality of second insertion holes 1111 distributed at intervals, the number of the second insertion holes 1111 is at least two, and all the second insertion holes 1111 are distributed at intervals around the rotation axis of the handle 171.

The handle 171 is rotated to rotate the assembly frame 12 to the first state, as shown in fig. 2, at this time, the plug 18 is inserted into the first insertion hole 1711 and one of the second insertion holes 1111, so that the handle 171 is fixed to the support portion 111 by the plug 18, and the handle 171 cannot rotate further with respect to the support portion 111, so that the assembly frame 12 can be maintained in the first state and cannot rotate at will, thereby facilitating the arrangement and assembly of the battery cells 100.

Similarly, rotating the handle 171 to rotate the assembly frame 12 to the second state, as shown in fig. 5, inserting the latch 18 into the first receptacle 1711 and the other second receptacle 1111 allows the handle 171 to be fixed to the support 111 by the latch 18, and the handle 171 cannot rotate further with respect to the support 111, so that the assembly frame 12 can be maintained in the second state without any rotation, which facilitates the welding of the battery cells 100.

By providing the first insertion holes 1711 in the handle 171, one of the supporting parts 111 is provided with a plurality of second insertion holes 1111 spaced around the rotation axis of the handle 171, and inserting the pins 18 into the first insertion holes 1711 and the corresponding one of the second insertion holes 1111 after rotating the handle 171 to different positions, the assembly frame 12 can be maintained in the first state so as to facilitate the binding assembly of the battery cells 100, or the assembly frame 12 can be maintained in the second state so as to facilitate the welding of the battery cells 100.

In some embodiments, the assembly frame 12 further includes a bottom plate 123, a detachable plate 124, and two side plates 125, where the two side plates 125 are spaced apart and connected to two ends of the bottom plate 123 respectively to enclose a cavity 121, the detachable plate 124 is detachably connected between the two side plates 125, the bottom plate 123, the detachable plate 124, and the two side plates 125 enclose a cavity 121, and the detachable plate 124 is located on a side opposite to the opening 122.

As shown in fig. 1 and 2, the assembly frame 12 is a rectangular frame surrounded by a plurality of plates, two side plates 125 are respectively connected to two ends of the bottom plate 123, and both side plates 125 are perpendicular to the bottom plate 123. The detachable plate 124 is detachably connected between the two side plates 125, the bottom plate 123, the detachable plate 124 and the two side plates 125 enclose a cavity 121, and the detachable plate 124 is located at a side opposite to the opening 122.

In assembling the battery, as shown in fig. 2, the assembly frame 12 is first rotated to a first state, and the detachable plate 124 is removed from the assembly frame 12, while the bottom plate 123 is positioned at the bottom of the assembly frame 12, and then the battery cells 100 may be laterally arranged in the tabs, and the side surfaces are placed in the cavities 121 in the assembly frame 12 in a supporting surface posture, and the bottom plate 123 is used to support all the battery cells 100. The battery cells 100 are placed in sequence from the side opposite to the opening 122. After all the battery cells 100 are placed, the two ends of the detachable plate 124 are connected to the two side plates 125, respectively. Then, the assembly frame 12 is rotated to the second state, at this time, the detachable plate 124 is rotated to the bottom of the assembly frame 12, and the detachable plate 124 supports all the battery cells 100, and the battery cells 100 are arranged in the cavities 121 in the upright posture with the tabs facing vertically upwards, so that the subsequent assembly and welding can be performed.

By providing the detachable plate 124, it is possible to facilitate the placement of the plurality of battery cells 100 into the cavity 121 from the side opposite to the opening 122, and the tab of the battery cell 100 is passed between the adjacent two first teeth 152 and then inserted into the notch 141 of the tab separator 14, and the tab separator 14 and the plastic support 15 do not interfere with the process of placing the battery cell 100 into the cavity 121.

In some embodiments, the detachable plate 124 is provided with a plurality of arc-shaped grooves that are arranged in sequence and fit with the bottom surface of the battery cell 100. The bottom surface of the battery cell 100 is a surface of the battery cell 100 opposite to the tab.

Because the bottom surface of the soft-pack battery opposite to the tab is a curved surface, in order to facilitate the post flatness of the assembled battery, a plurality of arc grooves are sequentially arranged on the detachable plate 124, so that the bottom surfaces of the battery cells 100 arranged in the cavity 121 can respectively form arc contact with the arc grooves in a one-to-one correspondence manner. Wherein, the arc-shaped groove of the detachable plate 124 is matched with the bottom surface of the battery cell 100, which means that the bottom surface of the battery cell 100 is basically close to the radian of the arc-shaped groove, and the bottom surface of the battery cell 100 can be attached to the arc-shaped groove. In this way, when the assembly frame 12 is in the second state, the battery cells 100 can be arranged in the cavities 121 in the upright posture with the tabs facing vertically upward, and the battery cells 100 are parallel to the perpendicular lines of the detachable plates 124 as much as possible, thereby improving the post flatness of the assembled battery.

In some embodiments, the bottom plate 123 is provided with a slot 1231 through which the tie 300 passes.

As shown in fig. 3 and 7, the base plate 123 is provided with an elongated slot 1231, the width of the slot 1231 being slightly wider than the width of the band 300. Thus, when the assembly frame 12 is in the first state, after all the battery cells 100 are sequentially placed on the bottom plate 123, the ribbon 300 is passed downward through one end of the slot 1231, then the ribbon 300 is passed around the bottoms of all the battery cells 100 and then is passed upward from the other end of the slot 1231 to the top of the battery cell 100, finally the two ends of the ribbon 300 are fixed, and the redundant part of the ribbon 300 is cut off by the ribbon machine. The band 300 thus surrounds all the battery cells 100 arranged in the cavity 121 for one week and binds the battery cells 100.

By providing the base plate 123 with the slot 1231 through which the tie 300 passes, the tie 300 can be easily passed through the slot 1231 of the base plate 123 and around the battery cell 100 for one round, thereby binding the battery cell 100.

In some embodiments, the assembly fixture 1 further includes a lead screw 19, the assembly frame 12 further includes a slide plate 126, the slide plate 126 is slidably mounted between the two side plates 125, the cavity 121 is formed between the slide plate 126 and one of the side plates 125, and one end of the lead screw 19 passes through the other side plate 125 and abuts against the slide plate 126.

As shown in fig. 1 and 6, the slide plate 126 of the fitting frame 12 is located between the two side plates 125, and the slide plate 126 is slidable along the bottom plate 123. All of the battery cells 100 are arranged between the slide plate 126 and one of the side plates 125. The screw 19 passes through the other side plate 125 and presses against the slide plate 126. The slide plate 126 is pushed to slide on the bottom plate 123 by rotating the screw 19. After all the battery cells 100 are arranged in the cavity 121, the battery cells 100 can be pressed by adjusting the screw 19.

By providing the lead screw 19, the battery cell 100 in the cavity 121 can be compressed.

In some embodiments, the assembly fixture 1 includes a base 11, an assembly frame 12, a welded cover plate 13, tab spacers 14, a swage support 15, a locator 16, a hand-operated gear reducer, a latch 18, and a lead screw 19. The base 11 is provided with two supporting portions 111 which are distributed at intervals, and the two supporting portions 111 are provided with mounting holes. The assembly frame 12 includes a bottom plate 123, a detachable plate 124, a sliding plate 126, and two side plates 125, where the two side plates 125 are spaced apart and connected to two ends of the bottom plate 123, the detachable plate 124 is detachably connected between the two side plates 125, and the sliding plate 126 is slidably disposed on the bottom plate 123 and located between the two side plates 125. The bottom plate 123, the detachable plate 124, the slide plate 126, and one of the side plates 125 enclose a cavity 121, and an opening 122 penetrating the cavity 121 is provided on a side opposite to the detachable plate 124. The hand-operated gear reducer is provided with a crank 171. The hand-operated gear reducer is mounted on one of the support portions 111, and the crank handle 171 is attached to the side wall of the support portion 111. An output shaft of the hand-operated gear reducer is connected with one end of the assembly frame 12. The screw 19 sequentially penetrates the mounting hole of the other support portion 111 and the other side plate 125 of the fitting frame 12 and presses the slide plate 126. The output shaft of the hand-operated gear reducer and the central axis of the screw 19 are positioned on the same straight line. Thus, the two ends of the mounting frame 12 are rotatably supported by the two support portions 111, respectively, and the mounting frame 12 located between the two support portions 111 is rotatable about the output shaft of the hand-operated gear reducer. Turning the lead screw 19 pushes the slide plate 126 to slide along the bottom plate 123. The tab separator 14, the shaping support 15 and the positioning member 16 serve as three assembly parts, and are detachably mounted at the opening 122 of the assembly frame 12 when needed.

In a second aspect, the present embodiment provides a laser welding apparatus, which includes a laser welding machine and the assembly fixture 1 provided in any of the above embodiments, wherein a laser beam emitted from the laser welding machine can pass through the through hole 131 of the welding cover 13 and weld the battery cell 100.

After the assembly fixture 1 is used for assembling and overturning the plurality of battery cells 100, the lugs of each battery cell 100 are bent, then the assembly fixture 1 is pushed into a laser welding machine, and laser beams emitted by the laser welding machine are emitted to welding points of each battery cell 100 through the through holes 131 of the welding cover plate 13, so that each battery cell 100 can be welded, for example, the lugs of the battery cells 100 can be welded, but the welding machine is not limited to the welding points, and can be used for welding other welding points of the battery cells 100 which need to be welded.

The laser welding apparatus provided in this embodiment of the present application, because of including the assembly fixture 1 of any one of the embodiments, also has the technical effects of the assembly fixture of any one of the embodiments, and will not be described herein again.

The foregoing description of the preferred embodiment of the present invention is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. The utility model provides an assembly fixture for assemble battery, its characterized in that, assembly fixture includes base, assembly frame and welding apron, the base is equipped with supporting part, form in the assembly frame and be used for arranging a plurality of battery monomer's cavity, the assembly frame be equipped with just to and link up the opening of cavity, the assembly frame rotationally connect in supporting part, so that the assembly frame is in the perpendicular to the plane of base rotates, the welding apron is equipped with the through-hole that supplies the laser beam to pass through, the welding apron be used for detachably lid in the opening of assembly frame.

2. The assembly fixture of claim 1, further comprising tab spacers for removable mounting to the openings of the assembly frame, the tab spacers having a plurality of spaced apart notches, each of the notches for receiving a respective tab of a battery cell in the cavity in a one-to-one correspondence.

3. The assembly fixture of claim 2, wherein the tab separator comprises a connecting rod and a plurality of separator structures connected to the connecting rod, wherein the side of each separator structure facing the cavity is provided with the notch.

4. The assembly jig of claim 3, wherein the spacer structure comprises two spacer blocks, the two spacer blocks are arranged opposite to each other, the opposite side parts of the two spacer blocks are respectively provided with a first surface and a second surface which are not at the same height, the two first surfaces are adhered and fixed, and the notch is formed between the two second surfaces.

5. A mounting clip as defined in claim 3, wherein said spacer structure is slidably connected to said connecting rod.

6. The assembly fixture of claim 3, wherein each of the isolation structures is provided with two spaced notches, and two notches provided in the same isolation structure are respectively used for accommodating two tabs of the same battery cell.

7. The assembly fixture of claim 6, wherein the tab separator further comprises a barrier strip having a channel between two of the notches of the separator structure, the barrier strip being snapped into each of the channels to isolate two of the notches on the same separator structure.

8. The assembly fixture of claim 7, wherein a portion of the rail protrudes outside the channel in a direction parallel to the slot.

9. The assembly fixture of claim 7, wherein the tab separator further comprises two connection blocks, one end of the connection rod is connected to one of the connection blocks, the other end of the connection rod is connected to the other connection block, and the two connection blocks are respectively detachably mounted at both ends of the opening.

10. The assembly fixture of claim 9, wherein one end of the barrier strip is connected to one of the connection blocks and the other end of the barrier strip is connected to the other connection block.

11. The assembly fixture of any one of claims 1-10, further comprising a plastic support comprising a first stem and a plurality of first teeth, each of the first teeth being spaced apart and connected to the first stem, the first stem being configured to be removably mounted to the opening, the first teeth being configured to be interposed between adjacent lugs of two adjacent battery cells within the cavity.

12. The assembly jig of any one of claims 1 to 10, further comprising a positioning member including a second rod portion and a plurality of second tooth portions, all of the second tooth portions being arranged at intervals and connected to the second rod portion, the second rod portion being configured to be detachably mounted to the opening, the second tooth portion being configured to be inserted into a clamping groove of a harness isolation plate located at an end face of a tab of a battery cell.

13. The mounting clip of any one of claims 1-10 wherein the through hole has opposed first and second ends, the first end opening smaller than the second end opening, the first end being provided on a side of the weld overlay facing the mounting frame.

14. The assembly fixture of claim 13, wherein an aperture edge of the through-hole at the first end protrudes from a surface of the weld cover plate.

15. The mounting fixture of any one of claims 1-10, further comprising a drive motor, an output shaft of the drive motor coupled to the mounting frame to drive rotation of the mounting frame.

16. The assembly jig of any one of claims 1 to 10 wherein the assembly jig is further provided with a handle, the shaft of which is connected to the assembly frame.

17. The assembly fixture of claim 16, further comprising a latch, the handle mounted to the support, the handle having a first receptacle, the support having a plurality of second receptacles spaced around the axis of rotation of the handle, the latch being operatively inserted into the first receptacle and one of the second receptacles to maintain the mounting frame in a corresponding position, the openings facing in different directions when the mounting frame is rotated to different positions.

18. The assembly jig of any one of claims 1 to 10 wherein the assembly frame comprises a base plate, a removable plate and two side plates, the two side plates being spaced apart and connected to opposite ends of the base plate, the removable plate being removably connected between the two side plates, the base plate, the removable plate and the two side plates enclosing to form the cavity, the removable plate being located on a side opposite the opening.

19. The assembly fixture of claim 18, wherein the removable plate is provided with a plurality of arcuate recesses arranged in sequence and adapted to the bottom surface of the battery cells.

20. The assembly jig of claim 18 wherein the base plate is provided with slots for the tie to pass through.

21. The assembly fixture of claim 18, wherein the assembly fixture further comprises a lead screw, the assembly frame further comprises a slide plate slidably mounted between the two side plates, the cavity is formed between the slide plate and one of the side plates, and one end of the lead screw passes through the other side plate and abuts against the slide plate.

22. A laser welding apparatus comprising a laser welding machine and an assembly jig according to any one of claims 1 to 21, wherein a laser beam emitted from the laser welding machine is capable of passing through the through hole of the welding cover plate and welding a battery cell.