CN113020825A

CN113020825A - Square shell battery monomer pressure equipment welding jig and automatic weld equipment

Info

Publication number: CN113020825A
Application number: CN202110430820.4A
Authority: CN
Inventors: 何建军; 刘伟; 朱洪平; 袁纯全; 邓乔兵
Original assignee: Shenzhen Yuchen Automation Equipment Co ltd
Current assignee: Shenzhen Yuchen Automation Equipment Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-06-25
Anticipated expiration: 2041-04-21
Also published as: CN113020825B

Abstract

The invention provides a square-shell battery monomer press-fitting welding fixture and automatic welding equipment, wherein the square-shell battery monomer press-fitting welding fixture comprises: a frame mechanism; the bearing mechanism is used for bearing and moving the battery; the press-mounting mechanism is used for pressing the cover body of the pre-mounted battery into the shell body to be consistent in position; the buckling mechanism is used for buckling the cover body pressed in place to prevent the cover body from withdrawing; the clamping mechanism is used for moving the battery to a reference position without scraping and clamping the battery. The automatic welding equipment adopts the same set of laser, the same set of welding head and the same double channel to respectively install a set of welding platform of press-fitting welding fixture, and the like, and one machine completes press-fitting, clamping, prewelding and full-length welding in turn and performs welding on the double channels. The number of clamps, the number of clamping stations, the clamping times and the circulation time are reduced, the clamping precision and the welding quality are improved, the operation period is shortened, the equipment cost is saved, the welding equipment is fully utilized, and the types and the places of battery production equipment are reduced.

Description

Square shell battery monomer pressure equipment welding jig and automatic weld equipment

Technical Field

The invention relates to the technical field of battery monomer welding, in particular to a square-shell battery monomer press-fitting welding fixture and automatic welding equipment.

Background

The existing process for the top laser welding (cover plate laser welding for short) of the cover plate and the shell of the square aluminum shell lithium battery is carried out in sequence, wherein the cover plate and the shell are pressed and then prewelded and then fully welded, the cover plate and the shell are required to pass through different clamping stations respectively, and different welding protections are required to be prepared before welding.

Generally, the existing process equipment depends on the extremely high press-fitting precision and positioning precision of the clamp and the extremely high-speed movement precision of the clamp.

However, the current process equipment suffers from the following difficulties:

1. the existing process comprises shell mounting, press mounting, clamping, pre-welding and full-welding, wherein the existing process equipment adopts two sets of different pre-welding and full-welding lasers and two sets of different welding heads, which are respectively called as a pre-welding machine (with shell mounting and press mounting functions) and a full-welding machine, three sets of different clamps are respectively adopted, and three sets of different external press mounting and pressing devices which do not belong to the clamps are respectively provided with a special independent clamping station for press mounting, clamping, pre-welding and full-welding. Three sets of clamps are used for three times of clamping, so that the clamping precision is reduced and the welding period is prolonged;

2. because the manufacturing size deviation of the shell and the cover plate and the assembly matching deviation between the shell and the cover plate exist, the height difference exists after the shell and the cover plate are combined, a welding line plane formed by the top surface of the cover plate and a shell opening of the shell is possibly inclined, and the existing process equipment adopts a bottom fixing supporting plate as a positioning structure, so that the defocusing distance of the shell and the cover plate to laser is inconsistent, and the laser energy density is inconsistent, so that the welding quality is unstable;

3. a large gap exists between the shell and the cover plate, and laser enters the cavity through the gap to burn the outer film of the winding core or other elements during welding, so that the safety performance of the battery is damaged, and light transmission accidents occur.

Disclosure of Invention

The invention aims to provide a single square-shell battery press-fitting welding fixture and automatic welding equipment, which are used for solving the problems that process equipment in the prior art is divided into a press-fitting pre-welding machine and a full-welding machine, the number of clamping fixtures is large, the number of clamping stations is large, the clamping precision is low, a special protective cover loading, unloading and turnover device needs to be welded, the welding period is long, and unstable welding quality and light transmission accidents are easily caused in the press-fitting welding process due to the manufacturing process and the assembling precision deviation of a battery shell and a cover plate.

In order to achieve the above object, a first part of the technical scheme adopted by the invention is a press-fitting welding fixture for a square-shell battery cell, comprising:

the frame mechanism is used for installing the bearing mechanism, the press-mounting mechanism, the buckling mechanism and the clamping mechanism, the vertical direction of the bottom surface relative to the frame mechanism is taken as a Z axis, the left-right direction vertical to the Z axis is taken as an X axis, and the front-back direction vertical to the Z axis and the X axis is taken as a Y axis;

the bearing mechanism is used for bearing the battery and moving the battery, and can move along a Z axis, an X axis and a Y axis;

the pressing mechanism is used for pressing the cover body of the battery which is preassembled (the cover body is installed in the shell body but not in place) into the shell body to be consistent in place, and can move along the Z axis, the X axis and the Y axis;

the buckling mechanism is arranged on the bearing mechanism and positioned below the press-mounting mechanism and the clamping mechanism, the buckling mechanism is arranged around the battery, and the inserting fingers of the buckling mechanism can move along the Z axis and move relatively to the Y axis so as to buckle the cover body of the battery;

the clamping mechanism is arranged on the frame mechanism and located between the press-fitting mechanism and the buckling mechanism, a clamping plate of the clamping mechanism surrounds the battery, and the clamping plate can move along an X axis and/or a Y axis respectively so as to move the battery to a reference position and clamp the battery.

By adopting the technical scheme:

firstly, in this embodiment, the press-fitting operation, the pre-welding operation and the full-welding operation of the pre-assembled battery can be completed only by using a set of clamps (including a frame mechanism, a bearing mechanism, a press-fitting mechanism, a buckling mechanism and a clamping mechanism), so that in the press-fitting and welding process, the press-fitting and the clamping can be completed only by setting a clamping station to perform clamping once, and the clamping can be used for the subsequent pre-welding and full-welding operations, thereby reducing the number of clamps, the number of clamping stations, the clamping times and the circulation time, improving the clamping precision and the welding quality, shortening the operation period, and saving the cost of the clamps and the pressing and trimming mechanism.

Secondly, the cover body can be ensured to be tightly covered on the shell body by arranging the press-fitting mechanism, and meanwhile, a welding line plane formed by the top surface of the cover body and the shell opening of the shell body is kept to be in a reference plane, so that the welding quality is ensured. Meanwhile, the insertion fingers of the buckling mechanisms are arranged, so that the buckling mechanisms can be synchronously moved along with the bearing mechanism in the process of moving the battery in clamping and prewelding, the cover body of the battery is always in a close covering state with the shell, and the looseness between the cover body and the shell is avoided;

finally, the clamping plates of the clamping mechanism can respectively move along the X axis and/or the Y axis to move the battery to the reference position and clamp the battery, and the requirements of the existing production technology for repeatedly sleeving the fixed welding track on the battery for welding on the battery on the positioning accuracy and the high-speed movement accuracy of the battery are met.

In one embodiment, the bearing mechanism comprises a Z-axis object carrying plate driving module, an X-axis object carrying plate driving module, a Y-axis object carrying plate driving module and an object carrying plate for bearing a battery, wherein the Z-axis object carrying plate driving module comprises a Z-axis servo motor, a Z-axis translation module and a supporting plate, the Z-axis servo motor is installed on the Z-axis translation module, the Z-axis object carrying plate driving module is installed on a bottom plate of the frame mechanism, the X-axis object carrying plate driving module is arranged on the supporting plate, and the Y-axis object carrying plate driving module is arranged on the X-axis object carrying plate driving module. Z axle year thing board drive module can order about Z axle translation module drives the layer board X axle year thing board drive module with Y axle year thing board drive module it goes up and down along the Z axle to carry the thing board, X axle year thing board drive module can order about Y axle year thing board drive module with it removes along the X axle to carry the thing board, Y axle year thing board drive module can order about it removes along the Y axle to carry the thing board.

Through adopting above-mentioned technical scheme, Z axle year thing board drive module, X axle year thing board drive module and Y axle year thing board drive module are used for ordering about and carry the thing board and remove to the position of placing the battery on carrying the thing board in the adjustment, simultaneously the carrier drives the lock mechanism and removes, carrier synchronous movement lock good lock mechanism when clamping and preweld remove the battery, make the lid of the good battery of pressure equipment keep the state that closely covers with the casing all the time, avoid producing between lid and the casing not hard up.

In one embodiment, the carrying mechanism further comprises a floating mechanism, and the floating mechanism is arranged between the carrying plate and the supporting plate and used for passively adjusting the batteries carried by the carrying mechanism during press fitting propulsion so as to adjust the inclination direction and the inclination of the carrying plate.

By adopting the technical scheme, the bottom surface of the floating mechanism adaptive to the battery is inclined so as to ensure that the top surface of the cover body of the battery is attached to the joint surface of the press-mounting mechanism in parallel, and the welding line plane formed by the top surface of the cover body and the shell opening of the shell is favorably adjusted to a reference plane, so that the welding quality is favorably ensured.

In one embodiment, the press-fitting mechanism includes a push cover, a Z-axis reference plate Z-axis driving module, an X-axis push cover driving module, and a Y-axis push cover driving module, the push cover is connected to the frame mechanism, the Z-axis reference plate Z-axis driving module can drive the Z-axis reference plate to move along the Z-axis on the push cover, the X-axis push cover driving module can drive the push cover to move along the X-axis together with the Z-axis reference plate, and the Y-axis push cover driving module can drive the push cover to move along the Y-axis together with the Z-axis reference plate.

Through adopting above-mentioned technical scheme, after bearing mechanism drives the battery and removes to the pressure equipment position along Z axle, X axle and Y axle, pressure equipment mechanism removes to the pressure equipment position along X axle and Y axle, and the Z axle datum plate that descends makes Z axle dress press from both sides surplus height datum plane and pastes and compress tightly the clamp plate, then Z axle datum plate bolt drive module drive Z axle datum plate bolt pin Z axle datum plate. Then the bearing mechanism is used for lifting the battery upwards, the top surface of the battery cover body is contacted with the Z-axis reference surface of the bottom surface of the Z-axis reference plate, the cover body is pressed into the shell body to be consistent and in place, namely, the cover body is completely pressed into the shell body, so that the height of the step formed by the top surface of the cover body sinking into the shell opening of the shell body meets the requirement (generally less than or equal to 0.25mm), meanwhile, the top surface of the cover body and the shell opening of the shell are adjusted, so that a welding line plane formed by the top surface of the cover body and the shell opening of the shell reaches a reference plane, the press mounting of the battery and the positioning and clamping on the Z axis are completed, then the X-axis cover pushing driving module and the Y-axis cover pushing driving module can enable the Z-axis reference plate to move on the X axis and the Y axis along with the bearing mechanism in a releasing state, the pressing mechanism is kept to press the cover body and the shell all the time, and the Z-axis reference plate is lifted to the highest position to be separated from the battery and can not interfere with the movement of the pushing cover when the pushing cover is fully welded after the follow-up pre-welding.

In one embodiment, the Z-axis reference plate comprises a Z-axis reference surface, a Z-axis clamping residual height reference surface, a pre-welding unthreaded hole, a full-welding protective cover taking and placing device, and an inserting finger vacancy-avoiding position, wherein the Z-axis reference surface is the bottom surface of the Z-axis reference plate, the Z-axis clamping residual height reference surface is arranged at a reference angle of the Z-axis reference surface corresponding to an X-axis fixed clamping plate and a Y-axis fixed clamping plate, the Z-axis clamping residual height reference surface is an L-shaped angle ruler surface, each side is about 10mm in width and about 15mm in length, a height (generally about 1mm half of the thickness of a cover body) is protruded from the Z-axis reference surface for determining a consistent battery clamping residual height (generally about 1mm half of the thickness of the cover body), the pre-welding unthreaded hole is arranged on the Z-axis reference plate, the pre-welding unthreaded hole is arranged corresponding to a battery pre-welding position, and the full-welding protective cover is arranged at the upper bottom surface of the Z-axis reference plate close to a battery, the full-welding protective cover taking and placing device is arranged on the Z-axis reference plate and used for sucking or buckling the full-welding protective cover attached to the Z-axis reference plate and placing the full-welding protective cover on the cover body in a desorption or unbuckling mode, and the inserting finger clearance position is correspondingly arranged on the Z-axis reference plate.

By adopting the technical scheme, the Z-axis reference surface is used for being attached to the top surface of the cover body, so that the welding line plane formed by the top surface of the cover body and the shell opening of the shell body can be adjusted to the reference plane, and the welding quality can be ensured; the Z-axis clamp residual height datum plane is lower than the Z-axis datum plane by a step height (generally about one half of the thickness of the cover body by 1mm), the Z-axis clamp residual height datum plane supports against an X-axis fixed clamping plate and a Y-axis fixed clamping plate during battery press-fitting to play a role in positioning the height position of the Z-axis datum plane, the space height between the Z-axis clamp residual height datum plane and the Z-axis datum plane, which is supported by the Z-axis clamp residual height datum plane, enables the top surface of the cover body of the battery and a welding line plane formed by the pressed battery residual height datum plane and the shell opening to be attached to the Z-axis datum plane and then be higher than the X-axis fixed clamping plate and the Y-axis fixed clamping plate by a step height until the battery clamp becomes the battery clamp residual height (generally about one half of the thickness of the cover body), and the battery clamp residual height is used; the prewelding light inlet is used for enabling laser to penetrate through the Z-axis reference plate to be emitted to a welding line formed by the top surface of the cover body and the shell opening of the shell during prewelding; the Z-axis reference plate with the pre-welded light hole is used as a pre-welded protective cover to protect the electrode column, the electrode column plastic insulating sleeve, the explosion-proof window, the liquid injection hole and other top surface areas on the top surface of the cover body from being burnt by laser or splashes from falling; the full-welding protective cover is used for protecting an electrode column, an electrode column plastic insulating sleeve, an explosion-proof window, a liquid injection hole and other top surface areas on the top surface of the battery cover body during full-welding operation from being burnt by laser or splashing objects from falling, and only an area (designed according to the size of the top surface space of the battery) which is 3-10 mm from the outer side of the peripheral shell opening is reserved for welding; the full-welding protective cover taking and placing device can enable the full-welding protective cover to be separated from the Z-axis reference plate and placed on the cover body before full-welding operation and cover the top surface of the cover body of the battery, the Z-axis reference plate is moved away to meet the exposure and protection requirements of the full-welding operation, the Z-axis reference plate is moved back after the full-welding operation, and the full-welding protective cover is adsorbed or buckled on the Z-axis reference plate; the insertion finger avoidance space corresponds to the insertion finger position and is used for avoiding the interference of the insertion finger.

In one embodiment, the press-fitting mechanism further comprises a Z-axis reference plate bolt and a Z-axis reference plate bolt driving module, wherein the Z-axis reference plate bolt is in clutch connection with the Z-axis reference plate.

By adopting the technical scheme, the Z-axis datum plate bolt driving module is used for driving the Z-axis datum plate bolt to lock the Z-axis datum plate on the Z axis, so that the Z-axis datum surface abuts against the cover body of the battery during press mounting, the cover body is sleeved into the cover body uniformly and forcefully by the bearing mechanism, the cover body is pressed into the casing completely, and the height of the step formed by the top surface of the cover body sinking into the shell opening of the casing meets the requirement (generally is less than or equal to 0.25 mm).

In one embodiment, the buckling mechanism comprises an inserting finger mechanism, a Z-axis inserting finger mechanism driving module and a Y-axis inserting finger mechanism driving module, wherein the Z-axis inserting finger mechanism driving module can drive an inserting finger arm of the inserting finger mechanism to move uniformly along a Z axis so as to lift the inserting finger mechanism relative to the battery; the Y-axis finger inserting mechanism driving module can drive the finger inserting seat of the finger inserting mechanism to move relatively along the Y axis, and the finger inserting mechanism is opened or closed relative to the battery.

Through adopting above-mentioned technical scheme, Y axle is inserted and is pointed mechanism drive module and order about inserting and indicate the seat of inserting of mechanism and open, Z axle is inserted and is pointed mechanism drive module and order about inserting that indicates the mechanism and indicate the arm of inserting of mechanism and rise for go up and down the unloading of battery, after pressure equipment mechanism compresses tightly the lid, insert that indicates the inserting of mechanism and indicate and buckle on the lid, the good buckle mechanism of bearing mechanism synchronous motion lock when clamping and preweld removal battery for the lid of the good battery of pressure equipment keeps the state that closely covers with the casing all the time, avoid producing between lid and the casing not hard up.

In one embodiment, the finger inserting mechanism comprises a finger inserting seat, a finger inserting arm and finger inserting heads, the finger inserting seat is connected with the Y-axis finger inserting mechanism driving module, the finger inserting arm is connected with the finger inserting seat through the Z-axis finger inserting mechanism driving module, an open slot is formed in the end face, far away from the finger inserting seat, of the finger inserting arm, the finger inserting heads are arranged around the open slot of the finger inserting arm, and the finger inserting heads are arranged oppositely to the cover body in pairs.

By adopting the technical scheme, the inserting finger arm can drive the inserting finger on the inserting finger head to be driven to close by the Y-axis inserting finger mechanism driving module and driven to descend along the inserting finger seat by the Z-axis inserting finger mechanism driving module to buckle the cover body of the battery.

In one embodiment, the insertion finger head comprises an insertion finger, an elastic piece and an insertion finger cover, the insertion finger is installed in the insertion finger arm end face open slot, the elastic piece is buried between the insertion finger and the slot wall in the insertion finger arm end face open slot, so that the insertion finger can elastically move along the Y axis, and the insertion finger cover blocks the Z axis direction of the insertion finger arm end face open slot.

By adopting the technical scheme, when the inserting finger mechanism does not rise to the position due to failure but further buckles and must touch the battery shell wall, the inserting finger compression elastic piece counteracts the buckling stroke to avoid clamping the battery shell like a rigid inserting finger.

In one embodiment, the clamping mechanism comprises an X-axis movable clamping plate, an X-axis fixed clamping plate, a Y-axis movable clamping plate and a Y-axis fixed clamping plate, the X-axis movable clamping plate and the X-axis fixed clamping plate are arranged oppositely along the X axis, the distance between the X-axis movable clamping plate and the X-axis fixed clamping plate is adjustable, the Y-axis movable clamping plate and the Y-axis fixed clamping plate are arranged oppositely along the Y axis, and the distance between the Y-axis movable clamping plate and the Y-axis fixed clamping plate is adjustable.

By adopting the technical scheme, the square-shell battery monomer press-fitting welding fixture has a consistent reference position formed by the fixed clamping plates for the positions of the battery in the X axis and the Y axis, so that the battery can be positioned and clamped consistently.

In one embodiment, the clamping mechanism further comprises an X-axis movable clamping driving module and a Y-axis movable clamping driving module, wherein the X-axis movable clamping driving module drives the X-axis movable clamping plate to clamp the battery along the X-axis, and the Y-axis movable clamping driving module drives the Y-axis movable clamping plate to clamp the battery along the Y-axis.

By adopting the technical scheme, the square-shell battery monomer press-fitting welding fixture can drive the movable clamping plate to move the battery to the reference position by the driving module on the X axis and the Y axis so that the battery is uniformly positioned and clamped.

In one embodiment, the clamping mechanism further comprises an X-axis movable clamping plate and a Y-axis movable sliding rail arranged below the X-axis fixed clamping plate, the X-axis movable clamping plate firstly moves along the X axis to move the battery to be close to the X-axis fixed clamping plate and clamp the battery, and then the Y-axis movable clamping plate pushes the battery along the Y axis to move together with the X-axis movable clamping plate and the X-axis fixed clamping plate which clamp the battery to be close to the Y-axis fixed clamping plate and clamp the battery.

By adopting the technical scheme, the square-shell battery monomer press-fitting welding clamp can move and clamp the battery, so that the battery and the clamping plate are free of scraping, and the clamping is ensured not to damage the shell.

In one embodiment, the X-axis movable clamping plate, the X-axis fixed clamping plate, the Y-axis movable clamping plate and the Y-axis fixed clamping plate of the clamping mechanism are all provided with clamping teeth, the length of each clamping tooth is properly longer than the length of a pre-welding point of the battery, the width of each clamping tooth is properly wider than the penetration depth of the pre-welding point of the battery, the clamping teeth protrude to a proper height, preferably 0.05mm, and the positions of the clamping teeth on the clamping plates correspond to the positions of the pre-welding points of the battery.

Through adopting above-mentioned technical scheme, square shell battery monomer pressure equipment welding jig accomplishes to take place the printing opacity accident when preventing the prewelding through the tooth at prewelding point position local clenching battery.

In one embodiment, the clamping teeth arranged on the X-axis movable clamping plate, the X-axis fixed clamping plate, the Y-axis movable clamping plate and the Y-axis fixed clamping plate of the clamping mechanism can be replaced by another X-axis movable clamping driving assembly group, another Y-axis movable clamping driving assembly group and clamping fingers with the same size as the teeth, the clamping fingers penetrate through the clamping plates and are arranged at the position of a battery pre-welding point, and the depth extending out of the clamping plates during clamping is adjustable, so that the depth is preferably 0.05 mm.

Through adopting above-mentioned technical scheme, square shell battery monomer pressure equipment welding jig accomplishes to pinch the battery through pinching the finger in prewelding point position part and prevents that prewelding from taking place the printing opacity accident.

The second part of the technical scheme adopted by the invention is automatic welding equipment.

In one embodiment, the automatic welding equipment adopts one or more of the above-mentioned square-shell battery cell press-fitting welding clamps in combination.

By adopting the technical scheme, each welding channel only needs to be provided with one set of clamp and one press-fitting and clamping station, press-fitting and clamping can be completed without an external press-fitting and/or clamping device, and the clamping can be used for the subsequent pre-welding and full-welding operations.

In one embodiment, the automatic welding equipment adopts two sets of the single square-shell battery press-fitting welding clamps, and adopts the same set of welding laser, the same set of welding head and the same double channel to respectively install a welding platform of the set of press-fitting welding clamps, the same set of corollary equipment (a water cooler, a shielding gas device and a dust remover) and the same set of welding software.

By adopting the technical scheme, the automatic welding equipment completes press fitting, clamping, prewelding and full welding in sequence and performs welding in turn on double channels, so that the number of clamps, the number of clamping stations, the clamping times and the circulation time are reduced, the clamping precision and the welding quality are improved, the operation period is shortened, the cost of the clamps, the pressing and trimming mechanism, the laser, the welding head, the matching equipment and the welding software is saved, the welding equipment is fully utilized, and the types and the field of battery production equipment are reduced.

Drawings

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

Fig. 1 is a three-dimensional structure diagram of a press-fitting welding fixture for a square-shell battery cell provided by an embodiment of the invention;

fig. 2 is a right side view of a press-fitting welding jig for a square-casing battery cell according to an embodiment of the present invention;

fig. 3 is a perspective view of a first view of a press-fitting mechanism according to an embodiment of the present invention;

fig. 4 is a perspective view of a second view of the press-fitting mechanism according to the embodiment of the present invention;

fig. 5 is a perspective view of a cover fastening mechanism according to an embodiment of the present invention;

fig. 6 is a top view of a press-fitting welding fixture for a square-casing battery cell according to an embodiment of the present invention;

FIG. 7 is a perspective view of an X-axis movable clamping plate according to an embodiment of the present invention;

FIG. 8 is a perspective view of an X-axis stationary clamping plate according to an embodiment of the present invention;

FIG. 9 is a perspective view of a clamping plate for clamping teeth according to an embodiment of the present invention;

fig. 10 is a perspective view of an automatic welding apparatus according to an embodiment of the present invention.

The figures are numbered:

100-pressing and welding a square-shell battery monomer;

1-a frame mechanism; 2-a carrying mechanism; 3-a press-fitting mechanism; 4-a fastening mechanism; 5, clamping a mechanism; 6-a battery;

a 21-Z axis loading plate driving module; a 22-X axis carrier board driving module; a 23-Y axis carrier board driving module; 24-carrying plate; 25-a pallet; 26-a floating mechanism; 31-pushing the cover; a 32-Z axis datum plate; a Z-axis driving module of the 33-Z-axis reference plate; a 34-X axis cover-pushing driving module; a 35-Y axis cover-pushing driving module; a 36-Z axis datum plate peg; a 37-Z axis datum plate driving module; 41-finger insertion mechanism; a 42-Z axis finger inserting mechanism driving module; a 43-Y axis finger inserting mechanism driving module; a 51-X axis movable clamping plate; 52-X axis fixed clamping plate; a 53-Y axis movable clamping plate; 54-Y axis fixed clamping plate; a 55-X axis movable clamping driving module; a 56-Y axis movable clamping driving module; 57-gripping teeth; 61-a cover body; 62-a housing;

211-Z axis servo motor; 212-Z axis translation module; 261-center ball pivot; 262-an elastic member; 321-Z axis reference plane; 322-Z axis clamp residual height datum plane; 323-pre-welding a light hole; 324-full weld protector cap; 325-full welding protective cover taking and placing device; 326-finger escape from vacancy; 411-finger seat; 412-a finger arm; 413-insertion of fingers;

4131-finger cover; 4132-insert finger;

200-two-channel welding platform;

300-a welding head;

1000-automatic welding equipment.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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 be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the invention, and do not indicate that the device or component must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The following describes a specific implementation of the present invention in more detail with reference to specific embodiments:

as shown in fig. 1, a square-casing battery cell press-fitting welding fixture 100 provided by an embodiment of the present invention includes:

the frame mechanism 1 is used for installing the bearing mechanism 2, the press-mounting mechanism 3, the buckling mechanism 4 and the clamping mechanism 5, the vertical direction of the bottom surface relative to the frame mechanism 1 is taken as a Z axis, the left-right direction vertical to the Z axis is taken as an X axis, and the front-back direction vertical to the Z axis and the X axis is taken as a Y axis;

the bearing mechanism 2 is used for bearing the battery 6 and moving the battery 6, the bearing mechanism 2 is arranged on the clamp frame mechanism 1, and the bearing mechanism 2 can move along the Z axis, the X axis and the Y axis;

the press-fitting mechanism 3 is applied to the battery 6 with the cover body 61 pre-assembled into the shell body 62 and used for pressing the cover body 61 into the shell body 62 in a consistent position, the press-fitting mechanism 3 is arranged on the frame mechanism 1, and the press-fitting mechanism 3 can move along the Z axis, the X axis and the Y axis;

the buckling mechanism 4 is used for buckling the cover body 61 pressed in place to prevent the cover body 61 from withdrawing, the buckling mechanism 4 is arranged on the bearing mechanism 2 and is positioned below the clamping mechanism 5 and the press-mounting mechanism 3, the buckling mechanism 4 is arranged around the battery 6, and the inserting fingers 4132 of the buckling mechanism 4 can move along the Z axis and the Y axis to buckle the cover body 61 of the battery 6;

and the clamping mechanism 5 is arranged on the frame mechanism 1 and is positioned between the press-mounting mechanism 3 and the buckling mechanism 4, clamping plates (an X-axis movable clamping plate 51, an X-axis fixed clamping plate 52, a Y-axis movable clamping plate 53 and a Y-axis fixed clamping plate 54) of the clamping mechanism 5 are arranged around the battery 6, and the clamping plates can respectively move along the X axis and/or the Y axis to move the battery 6 to a reference position and clamp the battery.

The working principle of the square-shell battery cell press-fitting welding fixture 100 and the automatic welding equipment 1000 provided by the embodiment is as follows:

the single square-casing battery press-fitting welding fixture 100 of the present embodiment is used for press-fitting and welding the battery 6, and it should be explained that the battery 6 includes a casing 62, a cover 61, and a battery core (the cover 61 and the battery core are connected into a whole in advance), the casing 62 is a rectangular parallelepiped hollow top surface opening structure, the top surface opening of the casing 62 becomes a casing opening, the battery core is placed inside the casing 62 from the casing opening, the cover 61 covers the casing opening, and the cover 61 and the casing 62 form a closed square-casing structure. In addition, the case 62 and the cover 61 include, but are not limited to, aluminum, and the battery 6 includes, but is not limited to, a lithium battery;

the initial loading positions of the operation of the square-shell battery monomer press-fitting welding fixture 100 and the automatic welding equipment 1000 are as follows: the bearing mechanism 2 is in a low position (the battery 6 is placed in the rear cover body 61, the top surface of the cover body is 60mm higher than the clamping plate, and the battery is convenient to grab); the press-fitting mechanism 3 is positioned at the highest position of the Z-axis reference plate 32, the farthest position of the Y-axis away from the clamping plate, the leftmost position of the X-axis and the largest opening position of the Z-axis reference plate bolt 36; the buckling mechanism 4 is positioned at the highest position when the finger inserting mechanism 41 is opened to the maximum; the

movable clamping plates

51 and 53 of the clamping mechanism 5 are opened to the maximum;

the battery 6, which is preassembled (meaning that the cover 61 is installed in the housing 62 but not yet in place), is placed on the support mechanism 2 through the opening defined by the clamping

plates

51, 52, 53, 54, with the cover 61 facing upward in the Z-axis direction;

the bearing mechanism 2 drives the battery 6 to move to a press mounting position along a Z axis, an X axis and a Y axis; the press-fitting mechanism 3 moves to the press-fitting position along the X axis and the Y axis, lowers the Z-axis reference plate 32 to make the Z-axis clamp residual height reference surface 322 fit and press the clamping

plates

52, 54, and then the Z-axis reference plate bolt driving module 37 drives the Z-axis reference plate bolt 36 to lock the Z-axis reference plate 32. Then, the bearing mechanism 2 is used for lifting the battery 6 upwards, so that the top surface of the battery cover body 61 is contacted with the Z-axis reference surface 321 on the bottom surface of the Z-axis reference plate 32 to press the cover body 61 into the shell 62 to be consistent and in place, namely, the cover body 61 is completely pressed into the shell 62, the height of a step formed by the top surface of the cover body 61 sinking into the shell opening of the shell 62 meets the requirement (generally less than or equal to 0.25mm), and meanwhile, the top surface of the cover body 61 and the shell opening of the shell 62 are adjusted, so that the welding line plane formed by the top surface of the cover body 61 and the shell opening of the shell 62 reaches a reference plane, and thus, the press;

the finger seat 411 of the fastening mechanism 4 carries the finger arm 412 to move inward along the Y axis and then the finger arm 412 carries the finger 4132 to move downward along the Z axis, so as to fasten the finger 4132 to the peripheral portion of the top surface of the cover 61 of the battery 6 (which should avoid the position of the pre-welding point);

the X-axis movable clamping plate 51 of the clamping mechanism 5 firstly moves along the X axis to move the battery 6 to be close to the X-axis fixed clamping plate 52 and clamp the battery, and then the Y-axis movable clamping plate 53 pushes the battery 6 along the Y axis to move together with the X-axis movable clamping plate 51 and the X-axis fixed clamping plate 52 which clamp the battery 6 to be close to the Y-axis fixed clamping plate 54 and clamp the battery, so that the positioning and clamping of the battery 6 on the X axis and the Y axis are completed;

then, prewelding operation is carried out on the battery 6, the Z-axis reference plate 32 of the press-mounting mechanism 3 serves as a prewelding protective cover, the welding platform 200 drives the square-shell battery monomer press-mounting welding fixture 100 to move relative to the welding head 300, and laser enters from a prewelding light-in hole 323 of the Z-axis reference plate 32 to carry out short-line segment welding (also called spot welding) according to process requirements;

finally, in the full-welding operation, the buckling mechanism 4 is lifted and the inserting finger mechanism 41 is removed to enable the inserting fingers 4132 to be separated from the battery 6 and then lowered to a safe height, the full-welding protective cover 324 is desorbed or unsnapped on the cover body 61 by the Z-axis reference plate 32, then the Z-axis reference plate bolt driving module 37 drives the Z-axis reference plate bolt 36 to withdraw so as to unlock the Z-axis reference plate 32, the Z-axis reference plate 32 is lifted to the highest position from the pushing cover 31, the pushing cover 31 drives the Z-axis reference plate 32 to withdraw to the loading position along the Y axis, the welding platform 200 drives the square-shell battery cell press-fitting welding fixture 100 to move relative to the welding head 300, and the laser irradiates the welding line of the battery 6 from the outer edge of the full-welding protective cover 324 to perform full-circle welding (including arc starting and arc withdrawing on the cover body 61 so as to avoid full-.

After full welding, the pushing cover 31 carries the Z-axis reference plate 32 to move back along the Y axis and lower the Z-axis reference plate 32, the Z-axis reference plate 32 sucks or buckles the full-welding protection cover 324 to the Z-axis reference plate 32, then the Z-axis reference plate 32 is lifted to the highest position, the pushing cover 31 carries the Z-axis reference plate 32 and the full-welding protection cover 324 to move back to the loading position along the Y axis, the reloading mechanism 5 is released, the bearing mechanism 2 returns to the loading positions of the X axis and the Y axis and then is lifted to the loading position of the Z axis, and then the welded battery 6 is taken out.

After the first channel full weld is completed, the weld head 300 goes to the second channel for pre-welding and full weld. And the two channels are respectively subjected to feeding, press mounting and clamping in a circulating manner, and the two channels are alternately subjected to prewelding and full welding to carry out automatic large-batch continuous welding production of the square aluminum shell lithium battery monomer.

By adopting the technical scheme:

firstly, in the embodiment, the press-fitting operation, the pre-welding operation and the full-welding operation of the battery 6 can be completed only by adopting a set of clamps (comprising the frame mechanism 1, the bearing mechanism 2, the press-fitting mechanism 3, the buckling mechanism 4 and the clamping mechanism 5), so that in the press-fitting and welding process, the press-fitting and the clamping can be completed only by arranging one clamping station to perform clamping once, and the clamping can be used for the subsequent pre-welding and full-welding operations, thereby reducing the number of clamps, the number of clamping stations, the clamping times and the circulation time, improving the clamping precision and the welding quality, shortening the operation period and saving the cost of the clamps and the pressing mechanism;

secondly, the cover body 61 can be tightly covered on the shell body 62 by arranging the press-fitting mechanism 3, and meanwhile, a welding line plane formed by the top surface of the cover body 61 and the shell opening of the shell body 62 is kept to be in a reference plane, so that the welding quality is ensured. Meanwhile, the arrangement of the inserting fingers 4132 of the buckling mechanism 4 can ensure that the buckling mechanism 4 is synchronously moved along with the bearing mechanism 2 in the process of moving the battery 6 in clamping and prewelding, so that the cover body 61 of the battery 6 is always kept in a tightly covered state with the shell body 62, and the looseness between the cover body 61 and the shell body 62 is avoided;

finally, the X-axis movable clamping plate 51, the X-axis fixed clamping plate 52 and the Y-axis movable clamping plate 53 of the clamping mechanism 5 can respectively move along the X axis and/or the Y axis to move the battery 6 to a reference position and clamp the battery, so that the requirements of the existing production technology for repeatedly applying a fixed welding track to the battery 6 for welding on the positioning precision and the high-speed movement precision of the battery 6 are met.

Referring to fig. 2, in one embodiment, the carrying mechanism 2 includes a Z-axis carrying board driving module 21, an X-axis carrying board driving module 22, a Y-axis carrying board driving module 23, and a carrying board 24 for carrying the battery 6, the Z-axis carrying board driving module 21 includes a Z-axis servo motor 211, a Z-axis translation module 212, and a supporting board 25, the Z-axis servo motor 211 is installed on the Z-axis translation module 212, the Z-axis carrying board driving module 21 is installed on the bottom board of the frame mechanism 1, the X-axis carrying board driving module 22 is installed on the supporting board 25, and the Y-axis carrying board driving module 23 is installed on the X-axis carrying board driving module 22. Z axle year thing board drive module 21 can order about Z axle translation module 212 and drive layer board 25, X axle year thing board drive module 22 and Y axle year thing board drive module 23, carry thing board 24 and go up and down along the Z axle, and Y axle year thing board drive module 22 can order about Y axle year thing board drive module 23 and carry thing board 24 and remove along the X axle, and Y axle year thing board drive module 23 can order about year thing board 24 and remove along the Y axle.

Through adopting above-mentioned technical scheme, Z axle carries thing board drive module 21, X axle carries thing board drive module 22 and Y axle carries thing board drive module 23 and is used for ordering about to carry thing board 24 and removes to the position of battery 6 of adjustment placement on carrying thing board 24, bearing mechanism 2 drives the movement of snapping mechanism 4 simultaneously, the good snapping mechanism 4 of synchronous motion lock when clamping and preweld transfer battery 6, make the lid 61 of the good battery 6 of pressure equipment keep the state that closely covers with casing 62 all the time, it is not hard up to avoid producing between lid 61 and the casing 62.

In one embodiment, the carrying mechanism 2 further comprises a floating mechanism 26, and the floating mechanism 26 is disposed between the carrier plate 24 and the supporting plate 25 and used for passively adjusting the battery 6 carried by the battery 6 during the press-loading propulsion, so as to adjust the inclination direction and the inclination of the carrier plate 24.

Specifically, the floating mechanism 26 includes a central ball pivot 261 and an elastic member 262 surrounding the central ball pivot 261, the central ball pivot 261 and the elastic member 262 are disposed on the Y-axis loading plate driving module 23, the central ball pivot 261 is movably connected with the midpoint of the loading plate 24, the elastic member 262 is disposed at four corners of the bottom surface of the loading plate 24, and when the loading plate 24 is subjected to a pressure biased to one side, the loading plate 24 on the side can tilt with the central ball pivot 261 as a pivot;

by adopting the above technical scheme, the floating mechanism 26 is adapted to the inclination of the bottom surface of the battery 6, and is beneficial to pushing the cover body 61 of the battery 6 into the shell body 62 in an inclined manner and ensuring that the welding line plane formed by the top surface of the cover body 61 and the shell opening of the shell body 62 is attached to the Z-axis reference surface 321 of the Z-axis reference plate 32, thereby being beneficial to ensuring the welding quality.

As shown in fig. 3 and 4, in one embodiment, the press-fitting mechanism 3 includes a push lid 31, a Z-axis reference plate 32, a Z-axis reference plate Z-axis driving module 33, an X-axis push lid driving module 34, and a Y-axis push lid driving module 35, the push lid 31 is connected to the frame mechanism 1, the Z-axis reference plate Z-axis driving module 33 can drive the Z-axis reference plate 32 to move along the Z-axis on the push lid 31, the X-axis push lid driving module 34 can drive the push lid 31 to move along the X-axis together with the Z-axis reference plate 32, and the Y-axis push lid driving module 35 can drive the push lid 31 to move along the Y-axis together with the Z-axis reference plate 32.

By adopting the technical scheme, after the bearing mechanism 2 drives the battery 6 to move to the press-fitting position along the Z axis, the X axis and the Y axis, the press-fitting mechanism 3 moves to the press-fitting position along the X axis and the Y axis, the Z axis reference plate 32 is lowered to enable the Z axis clamp residual height reference surface 322 to be attached and press the clamping

plates

52 and 54, and then the Z axis reference plate bolt driving module 37 drives the Z axis reference plate bolt 36 to lock the Z axis reference plate 32. Then, the bearing mechanism 2 is used for lifting the battery 6 upwards, so that the top surface of the battery cover body 61 is contacted with the Z-axis reference surface 321 on the bottom surface of the Z-axis reference plate 32 to press the cover body 61 into the shell 62 to be consistent and in place, namely, the cover body 61 is completely pressed into the shell 62, the height of a step formed by the top surface of the cover body 61 sinking into the shell opening of the shell 62 meets the requirement (generally less than or equal to 0.25mm), and meanwhile, the top surface of the cover body 61 and the shell opening of the shell 62 are adjusted, so that the welding line plane formed by the top surface of the cover body 61 and the shell opening of the shell 62 reaches a reference plane, and thus, the press; then the X-axis pushing cover driving module 34 and the Y-axis pushing cover driving module 35 can move the Z-axis reference plate 32 along with the carrying mechanism 2 on the X-axis and the Y-axis in the released state, and keep the press-fitting mechanism 3 to press the cover 61 and the housing 62 all the time until the Z-axis reference plate 32 is lifted to the highest position to be disengaged from the battery 6 and not to interfere with the movement of the pushing cover 31 before full welding after the subsequent pre-welding, so that the pushing cover 31 can be removed.

In one embodiment, the Z-axis reference plate 32 includes a Z-axis reference plane 321, a Z-axis residual height reference plane 322, a pre-welding aperture 323, a full-welding protection cover 324, a full-welding protection cover pick-and-place device 325, and an insert finger clearance 326, wherein the Z-axis reference plane 321 is the bottom surface of the Z-axis reference plate 32, the Z-axis residual height reference plane 322 is disposed at a reference angle of the Z-axis reference plane 321 corresponding to the X-axis fixing clamping plate 52 and the Y-axis fixing clamping plate 54, the Z-axis residual height reference plane 322 is an L-shaped rectangular plane, each side has a width of about 10mm and a length of about 15mm, the Z-axis reference plane 321 protrudes a height (typically about 1mm half of the thickness of the cover) for determining a consistent residual height of the battery (typically about 1mm half of the thickness of the cover), the pre-welding aperture 323 is disposed on the Z-axis reference plate 32, the pre-welding aperture 323 is disposed at a position corresponding to the battery pre-welding position, the full-welding protection cover 32 is disposed at a position close to the bottom surface of the battery 324, the full-welding protective cover taking and placing device 325 is arranged on the Z-axis reference plate 32 and used for sucking or buckling the full-welding protective cover 324 attached on the Z-axis reference plate 32 and releasing or unbuckling the full-welding protective cover 324 and placing the full-welding protective cover 324 on the cover body 61, and the insertion finger clearance 326 is correspondingly arranged on the Z-axis reference plate 32.

By adopting the technical scheme, the Z-axis reference surface 321 is used for being attached to the top surface of the cover body 61, so that the welding line plane formed by the top surface of the cover body 61 and the shell opening of the shell 62 is favorably adjusted to the reference plane, and the welding quality is favorably ensured; the Z-axis clamp residual height datum plane 322 is lower than the Z-axis datum plane 321 by a step height (generally about 1mm which is half the thickness of the cover body 61), the Z-axis clamp residual height datum plane 322 is abutted against the X-axis fixed clamping plate 52 and the Y-axis fixed clamping plate 54 to position the height position of the Z-axis datum plane 321 when the battery 6 is pressed, the space height between the Z-axis clamp residual height datum plane 322 and the Z-axis datum plane 321 enables the top surface of the cover body 61 of the battery 6 and a welding line plane formed by the pressed battery residual height datum plane and a shell opening to be attached to the Z-axis datum plane 321 and then be higher than the X-axis fixed clamping plate 52 and the Y-axis fixed clamping plate 54 by a step height until the battery 6 clamping residual height (generally about 1mm which is half the thickness of the cover body 61) is formed by later clamping, and the battery 6 clamping residual height is used for avoiding laser damage to the clamping plates 51, 52, 53 and 54 during pre-welding and full-; the pre-welding unthreaded hole 323 is used for enabling laser to penetrate through the Z-axis reference plate 32 to be emitted to a welding line formed by the cover body 61 and the shell body 62 during pre-welding; the Z-axis reference plate 32 with the pre-welding light inlet 323 is used as a pre-welding protective cover to protect the electrode column, the plastic insulating sleeve of the electrode column, the explosion-proof window, the liquid injection hole and other top areas on the top surface of the cover body 61 from being burnt by laser or splashes from falling; the full-welding protective cover 324 is used for protecting an electrode column, an electrode column plastic insulating sleeve, an explosion-proof window, a liquid injection hole and other top surface areas on the top surface of the battery cover body 61 during full-welding operation from being burnt by laser or splashing, and only an area (designed according to the size of the top surface space of the battery) which is 3-10 mm inward outside the peripheral shell opening is reserved for welding; the full-length welding protection cover taking and placing device 325 can enable the full-length welding protection cover 324 to be separated from the Z-axis reference plate 32 and placed on the cover body 61 before full-length welding operation, cover the top surface of the cover body 61 of the battery 6, and enable the Z-axis reference plate 32 to be moved away, so that the requirements of exposure and protection of the full-length welding operation are met; after the full-welding operation, the Z-axis reference plate 32 is moved back again, and the full-welding protective cover 324 is sucked or buckled and attached to the Z-axis reference plate 32; the finger clearance bit 326 corresponds to the position of the finger 4132 for avoiding interference of the finger 4132.

In one embodiment, the press-fitting mechanism 3 further includes a Z-axis reference plate pin 36 and a Z-axis reference plate pin driving module 37, wherein the Z-axis reference plate pin 36 is detachably connected to the Z-axis reference plate 32.

By adopting the above technical scheme, the Z-axis datum plate bolt driving module 37 is used for driving the Z-axis datum plate bolt 36 to lock the Z-axis datum plate 32 on the Z axis, so that the Z-axis datum surface 321 is abutted against the cover body 61 of the battery 6 during press mounting to force the housing 62 to be sleeved into the cover body 61 uniformly and in place by the bearing mechanism 2 upwards, that is, the cover body 61 is completely pressed into the housing 62, and the height of the step formed by sinking the top surface of the cover body 61 into the shell opening of the housing 62 meets the requirement (generally less than or equal to 0.25 mm).

Referring to fig. 5, in one embodiment, the fastening mechanism 4 includes a finger inserting mechanism 41, a Z-axis finger inserting mechanism driving module 42 and a Y-axis finger inserting mechanism driving module 43, the Z-axis finger inserting mechanism driving module 42 can drive the finger inserting arms 412 of the finger inserting mechanism 41 to move along the Z-axis in unison, so as to lift the finger inserting mechanism 41 relative to the battery 6; the Y-axis finger insertion mechanism driving module 43 can drive the finger insertion seat 411 of the finger insertion mechanism 41 to move relatively along the Y-axis, and open or close the finger insertion mechanism 41 relative to the battery 6.

Specifically, when the battery 6 is to be placed on the carrying mechanism 2, the Z-axis finger inserting mechanism driving module 42 drives the finger inserting arm 412 of the finger inserting mechanism 41 to rise to the highest position along the Z-axis, the Y-axis finger inserting mechanism driving module 43 drives the finger inserting seat 411 of the finger inserting mechanism 41 to expand along the Y-axis, after the battery 6 is placed on the carrying mechanism 2 and the battery 6 is pressed by the press-fitting mechanism 3, the Y-axis finger inserting mechanism driving module 43 drives the finger inserting seat 411 of the finger inserting mechanism 41 to retract along the Y-axis to the position, so that the finger 4132 of the finger 413 is located above the cover 61, and then the Z-axis finger inserting mechanism driving module 42 drives the finger inserting arm 412 of the finger inserting mechanism 41 to descend along the Z-axis, so that the finger 4132 of the finger 413 fastens the top surface of the cover 61.

By adopting the technical scheme, the Y-axis insertion finger mechanism driving module 43 drives the insertion finger seat 411 of the insertion finger mechanism 41 to open, the Z-axis insertion finger mechanism driving module 42 drives the insertion finger arm 412 of the insertion finger mechanism 41 to ascend for charging and discharging of the battery, after the press-mounting mechanism 3 presses the cover body 61, the insertion finger 4132 of the insertion finger mechanism 41 is buckled on the cover body 61, the bearing mechanism 2 synchronously moves the buckled buckling mechanism 4 when the battery 6 is moved by clamping and pre-welding, so that the cover body 61 of the press-mounted battery 6 and the shell body 62 are kept in a tightly closed state all the time, and looseness between the cover body 61 and the shell body 62 is avoided.

In one embodiment, the finger inserting mechanism 41 includes a finger inserting seat 411, a finger inserting arm 412 and a finger inserting head 413, the finger inserting seat 411 is connected with the Y-axis finger inserting mechanism driving module 43, the finger inserting arm 412 is connected with the finger inserting seat 411 through the Z-axis finger inserting mechanism driving module 42, the finger inserting arm 412 is provided with an open slot at the end surface far away from the finger inserting seat 411, the finger inserting head 413 is arranged around the open slot of the finger inserting arm 412, and the finger inserting heads 413 are arranged opposite to each other in pairs towards the cover body 61.

By adopting the above technical solution, the insertion finger arm 412 can carry the insertion finger 4132 on the insertion finger 413 to be driven to close by the Y-axis insertion finger mechanism driving module 43 and to descend along the insertion finger seat 411 to buckle the cover 61 of the battery 6 by the Z-axis insertion finger mechanism driving module 42.

In one embodiment, the finger 413 includes a finger 4132, an elastic member and a finger cover 4131, the finger 4132 is installed in the open end of the finger arm 412, the elastic member is embedded between the finger 4132 and the groove wall in the open end of the finger arm 412, so that the finger 4132 can move elastically along the Y-axis, and the finger cover 4131 blocks the Z-axis direction of the open end of the finger arm 412.

By adopting the above technical scheme, when the inserting finger mechanism 41 does not rise to the right position due to failure but further buckling must touch the wall of the shell 62, the inserting finger 4132 compresses the elastic piece to counteract the buckling stroke and avoid clamping the shell 62 like a rigid inserting finger.

As shown in fig. 6 to 8, in one embodiment, the clamping mechanism 5 includes an X-axis movable clamping plate 51, an X-axis fixed clamping plate 52, a Y-axis movable clamping plate 53, and a Y-axis fixed clamping plate 54, the X-axis movable clamping plate 51 and the X-axis fixed clamping plate 52 are arranged oppositely along the X-axis, and the distance between the X-axis movable clamping plate 51 and the X-axis fixed clamping plate 52 is adjustable; the Y-axis movable clamping plate 53 and the Y-axis fixed clamping plate 54 are oppositely arranged along the Y-axis, and the distance between the Y-axis movable clamping plate 53 and the Y-axis fixed clamping plate 54 is adjustable.

By adopting the technical scheme, the square-shell battery cell press-fitting welding fixture 100 has a consistent reference position formed by the fixed

clamping plates

52 and 54 for the positions of the adjusting battery 6 on the X axis and the Y axis, so that the battery 6 can be positioned and clamped consistently.

In one embodiment, the clamping mechanism 5 further comprises an X-axis movable clamping driving module 55 and a Y-axis movable clamping driving module 56, wherein the X-axis movable clamping driving module 55 drives the X-axis movable clamping plate 51 to clamp the battery 6 along the X-axis, and the Y-axis movable clamping driving module 56 drives the Y-axis movable clamping plate 53 to clamp the battery 6 along the Y-axis.

By adopting the technical scheme, the square-shell battery monomer press-fitting welding fixture 100 can use the X-axis movable clamping driving module 55 and the Y-axis movable clamping driving module 56 to drive the X-axis movable clamping plate 51 and the Y-axis movable clamping plate 53 to move the battery 6 to the reference position to be positioned and clamped consistently on the X axis and the Y axis.

In one embodiment, the clamping mechanism 5 further comprises a Y-axis movable slide rail arranged below the X-axis movable clamping plate 51 and the X-axis fixed clamping plate 52, the X-axis movable clamping plate 51 is firstly moved along the X-axis to move the battery 6 to be close to the X-axis fixed clamping plate 52 and clamp the battery, and then the Y-axis movable clamping plate 53 pushes the battery 6 along the Y-axis to be moved to be close to the Y-axis fixed clamping plate 54 and clamp the battery together with the X-axis movable clamping plate 51 and the X-axis fixed clamping plate 52 which clamp the battery 6. By adopting the technical scheme, the square-shell battery monomer press-fitting welding fixture 100 can move and clamp the battery 6 without scraping the battery 6 and the clamping plate, so that the clamping does not damage the shell.

As shown in fig. 9, in one embodiment, the X-axis movable clamping plate 51, the X-axis fixed clamping plate 52, the Y-axis movable clamping plate 53 and the Y-axis fixed clamping plate 54 of the fixture 5 are all provided with clamping teeth 57, the length of each clamping tooth 57 is properly longer than the length of the pre-welding point of the battery 6, the width of each clamping tooth 57 is properly wider than the melting depth of the pre-welding point of the battery, the protruding proper height of each clamping tooth 57 is preferably 0.05mm, and the position of each clamping tooth 57 on each clamping plate corresponds to the pre-welding point position of the battery 6. By adopting the technical scheme, the square-shell battery monomer press-fitting welding fixture 100 can prevent light transmission accidents from occurring during prewelding by locally clenching the battery 6 at the prewelding point position through teeth.

In one embodiment, the clamping teeth 57 arranged on the X-axis movable clamping plate 51, the X-axis fixed clamping plate 52, the Y-axis movable clamping plate 53 and the Y-axis fixed clamping plate 54 of the clamping mechanism 5 can be replaced by another X-axis movable pinching driving pair, another Y-axis movable pinching driving pair, and pinching fingers with the same size as the teeth pass through the clamping plates to be arranged at the position of the prewelding point of the battery 6, and the depth extending out of the clamping plates during pinching is adjustable, preferably 0.05 mm. Through adopting above-mentioned technical scheme, square-shell battery monomer pressure equipment welding jig 100 accomplishes and pinches tight battery 6 through pinching the finger in prewelding point position part and prevents that the prewelding from taking place the printing opacity accident.

The second part of the technical solution adopted by the present invention is an automatic welding apparatus 1000.

As shown in fig. 10, in one embodiment, the automated welding apparatus 1000 employs one or more of the above-described combination of square-casing battery cell press-fitting welding jigs 100. By adopting the technical scheme, each welding channel only needs to be provided with one set of clamp and one press-fitting and clamping station, press-fitting and clamping can be completed without an external press-fitting and/or clamping device, and the clamping can be used for the subsequent pre-welding and full-welding operations.

In one embodiment, the automatic welding apparatus 1000 relies on the use of two sets of square-shell battery cell press-fit welding fixtures 100, the use of the same set of welding lasers, the same set of welding heads 300, the same dual channel welding platform 200 with each set of press-fit welding fixtures installed, the same set of supporting equipment (water chiller, shielding gas device, dust remover), and the same set of welding software. By adopting the technical scheme, the automatic welding equipment 1000 machine completes press fitting, clamping, pre-welding and full-welding in sequence, reduces the number of clamps, the number of clamping stations, the number of clamping times and the circulation time, improves the clamping precision and the welding quality, shortens the operation period, saves the cost of the clamps, the pressing mechanism, the laser, the welding head, the matching equipment and the welding software, makes full use of the welding equipment, and reduces the types and the sites of battery production equipment.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a square shell battery monomer pressure equipment welding jig which characterized in that includes:

the press-mounting mechanism is used for pressing the cover body of the pre-mounted battery into the shell body to be consistent in position, and can move along the Z axis, the X axis and the Y axis;

2. The square-shell battery monomer press-fitting welding fixture as claimed in claim 1, wherein the carrying mechanism comprises a Z-axis carrying plate driving module, an X-axis carrying plate driving module, a Y-axis carrying plate driving module, and a carrying plate for carrying a battery, the Z-axis carrying plate driving module comprises a Z-axis servo motor, a Z-axis translation module, and a supporting plate, the Z-axis servo motor is mounted on the Z-axis translation module, the Z-axis carrying plate driving module is mounted on a bottom plate of the frame mechanism, the X-axis carrying plate driving module is disposed on the supporting plate, and the Y-axis carrying plate driving module is disposed on the X-axis carrying plate driving module; z axle year thing board drive module can order about Z axle translation module drives the layer board X axle year thing board drive module with Y axle year thing board drive module it goes up and down along the Z axle to carry the thing board, X axle year thing board drive module can order about Y axle year thing board drive module with it removes along the X axle to carry the thing board, Y axle year thing board drive module can order about it removes along the Y axle to carry the thing board.

3. The square-shell battery cell press-fitting welding fixture as claimed in claim 2, wherein the carrying mechanism further comprises a floating mechanism, the floating mechanism is arranged between the carrying plate and the supporting plate, and is used for passively adjusting the battery during press-fitting propulsion of the carried battery, so as to adjust the inclination direction and the inclination of the carrying plate.

4. The square-shell battery cell press-fitting welding fixture as claimed in claim 1, wherein the press-fitting mechanism comprises a push cover, a Z-axis reference plate Z-axis driving module, an X-axis push cover driving module and a Y-axis push cover driving module, the push cover is connected to the frame mechanism, the Z-axis reference plate Z-axis driving module can drive the Z-axis reference plate to move along the Z-axis on the push cover, the X-axis push cover driving module can drive the push cover to move along the X-axis together with the Z-axis reference plate, and the Y-axis push cover driving module can drive the push cover to move along the Y-axis together with the Z-axis reference plate.

5. A press-fitting welding jig for square-casing battery cells as in claim 4, wherein the Z-axis reference plate comprises a Z-axis reference surface, a Z-axis residual height reference surface, a pre-welding unthreaded hole, a full-welding protective cover pick-and-place device, and an insertion finger vacancy-avoiding position, the Z-axis reference surface is the bottom surface of the Z-axis reference plate, the Z-axis residual height reference surface is arranged at a reference angle of the Z-axis reference surface corresponding to the X-axis fixed clamping plate and the Y-axis fixed clamping plate, the Z-axis residual height reference surface is an L-shaped angle ruler surface, each side has a width of about 10mm and a length of about 15mm, and is protruded by a height from the Z-axis reference surface for determining the consistent battery clamping residual height, the pre-welding unthreaded hole is arranged on the Z-axis reference plate and corresponds to the battery pre-welding position, the full-welding protective cover is arranged on the bottom surface of the Z-axis reference plate close to the battery, the full-welding protective cover taking and placing device is arranged on the Z-axis reference plate and used for sucking or buckling the full-welding protective cover attached to the Z-axis reference plate and placing the full-welding protective cover on the cover body in a desorption or unbuckling mode, and the inserting finger clearance position is correspondingly arranged on the Z-axis reference plate.

6. A press-fitting and welding fixture for square-shell battery cells as claimed in claim 5, wherein the press-fitting mechanism further comprises a Z-axis reference plate bolt and a Z-axis reference plate bolt driving module, the Z-axis reference plate bolt is in clutch connection with the Z-axis reference plate, and the Z-axis reference plate bolt driving module is used for driving the Z-axis reference plate bolt to lock or unlock the Z-axis reference plate on the Z axis.

7. The square-shell battery cell press-fitting and welding fixture as claimed in claim 1, wherein the buckling mechanism comprises an inserting finger mechanism, a Z-axis inserting finger mechanism driving module and a Y-axis inserting finger mechanism driving module, and the Z-axis inserting finger mechanism driving module can drive an inserting finger arm of the inserting finger mechanism to move along a Z-axis in unison so as to lift the inserting finger mechanism relative to the battery; the Y-axis finger inserting mechanism driving module can drive the finger inserting seat of the finger inserting mechanism to move relatively along the Y axis, and the finger inserting mechanism is opened or closed relative to the battery.

8. The single square-shell battery press-fitting welding fixture as claimed in claim 7, wherein the finger inserting mechanism comprises a finger inserting seat, a finger inserting arm and finger inserting heads, the finger inserting seat is connected with the Y-axis finger inserting mechanism driving module, the finger inserting arm is connected with the finger inserting seat through the Z-axis finger inserting mechanism driving module, an open slot is formed in an end face, far away from the finger inserting seat, of the finger inserting arm, the finger inserting heads are arranged around the open slot of the finger inserting arm, and the finger inserting heads are arranged opposite to the cover body in pairs.

9. The square-shell battery cell press-fitting welding fixture as claimed in claim 8, wherein the insertion finger head comprises an insertion finger, an elastic member and an insertion finger cover, the insertion finger is installed in the insertion finger arm end surface open slot, the elastic member is embedded between the insertion finger and the slot wall in the insertion finger arm end surface open slot, so that the insertion finger can elastically move along the Y axis, and the insertion finger cover blocks the Z axis direction of the insertion finger arm end surface open slot.

10. A square shell battery cell press-fitting welding fixture as claimed in claim 1, wherein the clamping mechanism comprises an X-axis movable clamping plate, an X-axis fixed clamping plate, a Y-axis movable clamping plate, and a Y-axis fixed clamping plate, the X-axis movable clamping plate and the X-axis fixed clamping plate are arranged oppositely along an X-axis, a distance between the X-axis movable clamping plate and the X-axis fixed clamping plate is adjustable, the Y-axis movable clamping plate and the Y-axis fixed clamping plate are arranged oppositely along a Y-axis, and a distance between the Y-axis movable clamping plate and the Y-axis fixed clamping plate is adjustable.

11. A press-fitting welding jig for single square-shell batteries according to claim 10, wherein the clamping mechanism further comprises an X-axis movable clamping driving module and a Y-axis movable clamping driving module, the X-axis movable clamping driving module drives the X-axis movable clamping plate to clamp the batteries along the X-axis, and the Y-axis movable clamping driving module drives the Y-axis movable clamping plate to clamp the batteries along the Y-axis.

12. A press-fitting welding jig for square-casing battery cells as claimed in claim 11, wherein said clamping mechanism further comprises a Y-axis movable slide rail located below said X-axis movable clamping plate and said X-axis fixed clamping plate.

13. A press-fitting welding jig for single square-casing batteries according to claim 12, wherein the X-axis movable clamping plate, the X-axis fixed clamping plate, the Y-axis movable clamping plate and the Y-axis fixed clamping plate are all provided with clamping teeth, the length of the clamping teeth is properly longer than the length of the pre-welding point of the battery, the width of the clamping teeth is properly wider than the penetration depth of the pre-welding point of the battery, the clamping teeth protrude to a proper height, and the positions of the clamping teeth on the clamping plates correspond to the positions of the pre-welding points of the battery.

14. A press-fitting welding jig for single square-shell batteries according to claim 13, wherein the X-axis movable clamping plate, the X-axis fixed clamping plate, the Y-axis movable clamping plate and the clamping teeth arranged on the Y-axis fixed clamping plate of the clamping mechanism can be replaced by an X-axis movable clamping driving pair group, a Y-axis movable clamping driving pair group, and clamping fingers having the same size as the teeth penetrate through the clamping plates and are arranged at the position of the battery pre-welding point, and the depth of the clamping fingers extending out of the clamping plates is adjustable when the clamping fingers are clamped.

15. An automatic welding device, characterized by comprising the square-casing battery cell press-fitting welding jig of any one of claims 1 to 14.

16. An automatic welding device, characterized in that two sets of the single square-shell battery pressing and welding clamps as claimed in any one of claims 1 to 14 are adopted, the same set of laser, the same set of welding head, the same double channel are adopted to respectively install a welding platform of the pressing and welding clamps, the same set of matching equipment and the same set of welding software, the automatic welding device completes pressing, clamping, pre-welding and full-welding in turn and performs welding on the double channels in turn.