CN108406177B - Battery welding equipment and battery welding method - Google Patents
Battery welding equipment and battery welding method Download PDFInfo
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- CN108406177B CN108406177B CN201810214411.9A CN201810214411A CN108406177B CN 108406177 B CN108406177 B CN 108406177B CN 201810214411 A CN201810214411 A CN 201810214411A CN 108406177 B CN108406177 B CN 108406177B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0461—Welding tables
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to a battery welding device and a battery welding method, wherein the battery welding method comprises the following steps: the battery case is conveyed to a sorting station by a feeding conveyer belt; detecting whether the working states of the discharging stations of the two seal welding conveying belts are idle or occupied; sorting the battery shells positioned at the sorting station to any one of two seal welding conveying belts with idle discharge stations; clamping and positioning the battery shell positioned at the welding station; and welding the battery shell positioned at the welding station according to a preset welding path. The battery welding method and the battery welding equipment provided by the invention can effectively improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to battery welding equipment and a battery welding method.
Background
At present, lithium batteries are widely used in the fields of mobile phones, notebooks, new energy electric vehicles and the like due to their excellent high capacity, low consumption and environmental protection characteristics. In the post-production process of the lithium battery, two ends of a battery shell of the lithium battery need to be welded so as to seal the battery shell. The conventional welding method places the battery case on a single line and welds the battery case at a welding station of the battery case. When the welding is finished, the welding head needs to wait for the next battery case to enter a welding station, and the welding head can continue to work after clamping and positioning. Therefore, the welding head cannot be used sufficiently for welding, and the production efficiency is low.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a battery welding apparatus and a battery welding method capable of effectively improving the production efficiency, in order to solve the problem of low production efficiency in the related art.
A battery welding method, comprising the steps of:
the battery case is conveyed to a sorting station by a feeding conveyer belt;
detecting whether the working states of the discharging stations of the two seal welding conveying belts are idle or occupied;
sorting the battery shells positioned at the sorting station to any one of the two sealing and welding conveyor belts with the emptying station idle;
clamping and positioning the battery shell positioned at the welding station;
and welding the battery shell positioned at the welding station according to a preset welding path.
In one embodiment, the step of sorting the battery shells located at the sorting station onto any one of the two sealing and welding conveyor belts with the emptying station being idle comprises the following steps:
if the discharging stations of the two sealing and welding conveyor belts are occupied, the battery shells positioned at the sorting stations wait until the discharging stations on the sealing and welding conveyor belts are idle;
if one discharging station of the two sealing and welding conveyor belts is occupied, the battery shell positioned at the sorting station is sorted to the other sealing and welding conveyor belt;
and if the discharging stations of the two sealing and welding conveyor belts are idle, the battery shells positioned at the sorting station are sorted to any one sealing and welding conveyor belt.
In one embodiment, the step of welding the battery case located at the welding station according to the preset welding path further comprises the following steps: and carrying out laser ranging on the battery shell along a preset direction to obtain position adjustment data of the welding head.
In one embodiment, the step of performing laser ranging on the battery case along the preset direction to obtain the position adjustment data of the welding head further includes the following steps: and positioning and adjusting the welding joint along the preset direction according to the position adjustment data of the welding joint.
A battery welding device applies the battery welding method to weld, and the battery welding device comprises:
a frame for supporting;
the conveying mechanism is arranged on the rack and comprises a feeding conveying belt and two sealing and welding conveying belts which can do intermittent motion, the two sealing and welding conveying belts and the feeding conveying belt are arranged in parallel, the feeding conveying belt is provided with a sorting station, and the two sealing and welding conveying belts are provided with a discharging station and a welding station;
the sorting mechanism is arranged on the rack and used for sorting the battery shell positioned on the sorting station to any one of the two sealing and welding conveyer belts;
the two positioning mechanisms are arranged on the rack and respectively correspond to the welding stations of the two seal welding conveying belts, and the positioning mechanisms are used for clamping and positioning the battery shell positioned on the welding stations;
the welding mechanism is movably arranged on the rack and is used for respectively welding the battery shells positioned at the welding stations of the two seal welding conveying belts;
the sensor assembly is arranged on the rack and comprises a battery shell sensor, and the battery shell sensor is used for detecting whether the sorting station and the discharging station are idle or occupied in working states; and
and the controller is in communication connection with the sensor assembly, the positioning mechanism and the welding mechanism and is used for controlling the sorting mechanism to sort the battery shell positioned at the sorting station to any one of the two seal welding conveying belts with the emptying station in an idle state.
In one embodiment, the sensor assembly further includes a casing seat sensor, a light emitting surface of the casing seat sensor faces the surfaces of the feeding conveyer belt and the sealing conveyer belt, and the casing seat sensor is configured to send a signal to the controller when the battery casing enters a detection area of the casing seat sensor, so as to detect whether the working states of the feeding conveyer belt and the sealing conveyer belt are normal or faulty.
In one embodiment, the sorting mechanism includes a sorting manipulator, a slide rail, and a sorting driver, the slide rail includes a first slide rail and a second slide rail, the first slide rail extends along a first direction perpendicular to the length direction of the feeding conveyor belt, the second slide rail extends along a second direction perpendicular to the length direction of the feeding conveyor belt and the first direction, and the sorting driver is configured to drive the sorting manipulator to slide along the first slide rail and the second slide rail.
In one embodiment, the positioning mechanism comprises:
the intercepting component comprises a positioning block, an intercepting block and an intercepting moving piece, the positioning block is arranged on one side, opposite to the intercepting component, of the seal welding conveying belt, and the intercepting moving piece is used for driving the intercepting block to move along the first direction, so that the intercepting block is abutted to the positioning block.
The side pressure assembly comprises a side pressure block, a side pressure moving part and a side pressure slide rail, the side pressure slide rail extends along the first direction, the side pressure moving part is slidably arranged on the side pressure slide rail, and the side pressure moving part can drive the side pressure block to move along the length direction of the sealing and welding conveying belt and the first direction so as to enable the side pressure block to be abutted against a battery shell; and
the positive pressure component comprises a positive pressure block and a positive pressure moving piece, and the positive pressure moving piece is used for driving the positive pressure block to move along the first direction so that the positive pressure block is pressed on the battery shell.
In one embodiment, the welding mechanism includes a welding head, a first robot, a second robot, and a third robot, the first robot can move the welding head in the first direction, the second robot can move the welding head in the second direction, and the third robot can move the welding head in the direction of the sealing conveyer.
In one embodiment, the welding robot further comprises a laser distance measuring device, the laser distance measuring device is movably arranged on the second manipulator and is in communication connection with the controller, and the laser distance measuring device is used for acquiring distance parameters between the laser distance measuring device and the battery shell along a preset direction and feeding the distance parameters back to the controller so as to calibrate the distance between the welding head and the preset direction.
The battery welding method and the equipment thereof firstly convey the battery case to a sorting station by the feeding conveyer belt; then detecting whether the working states of the discharging stations of the two seal welding conveying belts are idle or occupied; then, the battery shells positioned at the sorting station are sorted to any one of two seal welding conveying belts with idle discharge stations; then clamping and positioning the battery shell positioned at the welding station; and finally, welding the battery shell positioned at the welding station according to a preset welding path. In the battery welding method, the welding station of one sealing and welding conveyer belt is used for clamping and positioning, and the welding station of the other sealing and welding conveyer belt is used for welding the battery shell. When one sealing and welding conveyer belt finishes clamping and positioning the battery case, the other sealing and welding conveyer belt finishes welding the battery case, and then the welding head moves to the welding station of one sealing and welding conveyer belt for welding. The arrangement of the two seal welding conveying belts ensures that the two seal welding conveying belts can respectively complete the clamping positioning and welding of the battery case in the same time, and then the welding head reciprocates between the two seal welding conveying belts, so that the efficient utilization of the butt welding joint is realized. Therefore, the battery welding method and the equipment thereof have higher production efficiency.
Drawings
FIG. 1 is a flow chart of a method for welding a battery according to a preferred embodiment of the present invention;
FIG. 2 is a flow chart of a method of welding the battery of FIG. 1 in another embodiment;
fig. 3 is a flowchart of step S103 of the battery welding method shown in fig. 1;
FIG. 4 is a schematic structural diagram of a battery welding apparatus according to a preferred embodiment of the present invention;
FIG. 5 is a top view of the battery welding apparatus of FIG. 4;
FIG. 6 is an enlarged schematic view of portion A of the battery welding apparatus of FIG. 4;
FIG. 7 is a schematic view of a feeding belt of the battery welding apparatus shown in FIG. 4;
fig. 8 is a schematic structural view of a sorting mechanism in the battery welding apparatus shown in fig. 4;
FIG. 9 is a schematic structural view of a positioning mechanism in the battery welding apparatus shown in FIG. 4;
fig. 10 is a schematic structural view of a welding mechanism in the battery welding apparatus shown in fig. 4;
FIG. 11 is a diagram showing a moving path of a laser range finder in the battery welding apparatus shown in FIG. 4;
fig. 12 is a flowchart illustrating the operation of the battery welding apparatus shown in fig. 4.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a battery welding method according to a preferred embodiment of the present invention includes: the battery case is conveyed to a sorting station S101 by a feeding conveyer belt; s102, detecting that the working states of the discharging stations of the two seal welding conveying belts are idle or occupy; sorting the battery cases positioned at the sorting station to any one of two seal welding conveyor belts with idle discharge stations S103; clamping and positioning the battery shell positioned at the welding station S104; and welding the battery shell positioned at the welding station according to the preset welding path S107.
Referring to fig. 2 and 3 together, in another embodiment, sorting the battery cases located at the sorting station to any one of the two sealing conveyer belts with the empty discharge station S103 includes:
if the discharging stations of the two sealing and welding conveyor belts are occupied, the battery shells positioned at the sorting stations wait until the discharging stations on the sealing and welding conveyor belts are idle S103A;
if one discharging station of the two sealing and welding conveyor belts occupies, the battery cases positioned at the sorting station are sorted to the other sealing and welding conveyor belt S103B;
if the discharging stations of the two sealing and welding conveyor belts are idle, the battery cases positioned at the sorting station are sorted to any one sealing and welding conveyor belt S103C.
According to the preset welding path, the method also comprises the following steps before the step of welding the battery shell positioned at the welding station S107: and performing laser ranging on the battery case along a preset direction to obtain position adjustment data of the welding head S105.
The method comprises the following steps of carrying out laser ranging on a battery shell along a preset direction to obtain position adjustment data S105 of a welding head: and positioning and adjusting the welding joint along the preset direction according to the position adjustment data of the welding joint.
It should be noted that, in the present embodiment, the predetermined direction refers to a direction perpendicular to the surface of the top cap of the battery case, and the predetermined welding path is one turn around the circumference of the top cap.
In the battery welding method, the welding station of one sealing and welding conveyer belt is used for clamping and positioning, and the welding station of the other sealing and welding conveyer belt is used for welding the battery shell. When one sealing and welding conveyer belt finishes clamping and positioning the battery case, the other sealing and welding conveyer belt finishes welding the battery case, and then the welding head moves to the welding station of one sealing and welding conveyer belt for welding. The arrangement of the two seal welding conveying belts ensures that the two seal welding conveying belts can respectively complete the clamping positioning and welding of the battery case in the same time, and then the welding head reciprocates between the two seal welding conveying belts, so that the efficient utilization of the butt welding joint is realized. Therefore, the battery welding method has high production efficiency.
Referring to fig. 4, 5 and 6, the battery welding apparatus 100 according to the preferred embodiment of the present invention includes a frame 110, a conveying mechanism 120, a sorting mechanism 130, a positioning mechanism 140, a welding mechanism 150, a sensor assembly 160 and a controller (not shown). The battery welding apparatus 100 is used to fix and weld a battery case, among other things.
The frame 110 is a member that mainly plays a role of supporting and fixing. Therefore, the frame 110 is generally made of stainless steel, aluminum alloy, or other materials with high strength and rigidity, so as to reduce the problem of deformation and fracture of the frame 110 during operation.
The conveying mechanism 120 is disposed on the frame 110. The conveyor mechanism 120 includes an intermittently movable feed conveyor belt 122 and two seal conveyor belts 124. The two seal conveyors 124 and the feed conveyor 122 are arranged in parallel. Specifically, the feeding conveyor belt 122 and the two sealing conveyor belts 124 may be timing belts capable of performing a circulating motion. In addition, the battery welding equipment also has a driving mechanism connected to the feeding conveyer belt 122 and the two sealing conveyer belts 124, respectively, for driving the feeding conveyer belt 122 and the two sealing conveyer belts 124 to move, respectively. The feed conveyor 122 has a sorting station 1221 and the two seal conveyors 124 have a drop station and a welding station 1241. The feeding conveyor belt 122 is connected to the previous process, and conveys the battery cases processed by the previous process to the sorting station 1221. The battery case is sorted at the sorting station 1221, transported to the sealing conveyer belt 124, and clamped, positioned and welded at the welding station 1241. After the welding is completed, the workpiece is conveyed to the next process.
Referring to fig. 7, in the present embodiment, the feeding conveyor belt 122 and the two sealing conveyor belts 124 are provided with a housing seat 1222 on the surface thereof, the housing seat 1222 is provided with a slot 1223, and the battery housing can be held in the slot 1223.
The arrangement of the shell seat 1222 and the slot 1223 can prevent the battery shell from moving in the operation process, and ensure the stable transportation of the battery shell between the feeding conveyer belt 122 and the sealing conveyer belt 124. The shell bases 1222 follow the feeding conveyor belt 122 and the sealing conveyor belt 124 in a synchronous circulating motion, and the distance between each shell base 1222 is equal. Thus, the positioning of each housing seat 1222 can be calculated to detect whether the feeding conveyor 122 and the sealing conveyor 124 are operating normally.
Referring also to fig. 8, the sorting mechanism 130 is mounted to the frame 110. The sorting mechanism 130 is used to sort the battery cases located at the sorting station 1221 onto either of the two seal conveyors 124. Specifically, the sorting mechanism 130 may be a manipulator at any angle, or a manipulator movable at a predetermined angle, and only needs to ensure that the battery case can be sorted to the seal-welding conveyor belt 124.
Specifically, in the embodiment, the sorting mechanism 130 includes a sorting manipulator 132, a slide rail 134 and a sorting moving member 136, the slide rail 134 includes a first slide rail 1341 and a second slide rail 1342, the first slide rail 1341 extends along a first direction perpendicular to the length direction of the feeding conveyer 124, the second slide rail 1342 extends along a second direction perpendicular to the direction of the feeding conveyer 122 and the first direction, and the sorting moving member 136 is configured to drive the sorting manipulator 132 to slide along the first slide rail 1341 and the second slide rail 1342. It should be noted that, in the present embodiment, when the welding apparatus is placed horizontally, the first direction refers to a direction perpendicular to the feeding conveyor belt 122 in a horizontal plane, and the second direction refers to a direction perpendicular to the horizontal plane.
When the battery case does not enter the sorting station 1221, the sorting robot 132 is located at the initial position. The home position refers to the sorting robot 132 being in a position waiting for sorting. When the battery case enters the sorting station 1221, the sorting robot 132 is driven by the sorting movement 136 to move along the first sliding rail 1341 and the second sliding rail 1342 to enter the sorting station 1221, and is adjusted to a height suitable for gripping the battery case. The sorting robot 132 has a sorting end that can be opened or closed. The sorting ends are closed to grip the battery enclosure at the sorting station 1221. Further, the sorting robot 1221 moves to one of the sealing belts 124, the sorting end is opened, and the battery case is held in the engaging groove 1223 of the case holder 1222 of the sealing belt 124. After the sorting is completed, the sorting mover 136 drives the sorting robot 132 to move to the initial position.
Sorting manipulator 132, slide rail 134 and the setting of letter sorting moving member 136, when the battery case got into letter sorting station 1221, letter sorting manipulator 1221 can be fast accurate transport the battery case to seal welding conveyer belt 124, the effectual work efficiency that improves battery welding equipment 100.
Further, the sorting mechanism 130 further includes a flexible sheet 138, and the flexible sheet 138 is disposed at the sorting end of the sorting robot 132.
The flexible sheet 138 can prevent the surface of the battery case from being damaged when the sorting mechanical arm 132 clamps the battery case, and the surface precision of the battery case is improved. Specifically, the flexible sheet 138 may be a sponge, an elastic rubber pad, rubber, or other material, and only needs to ensure that the surface of the battery case is not scratched when the battery case is clamped.
Referring to fig. 9, two positioning mechanisms 140 are mounted on the frame 110 and respectively correspond to the welding stations 1241 of the two sealing belts 124. The positioning mechanism 140 is used to secure the battery enclosure at the welding station 1241.
The positioning mechanism 140 can clamp and fix the battery case when the battery case enters the welding station 1241, so as to facilitate the next welding process.
In the present embodiment, the positioning mechanism 140 includes an intercepting component 142, a side pressure component 144, and a positive pressure component 146. Wherein:
the intercepting component 142 includes a positioning block 1421, an intercepting block 1422, and an intercepting motion 1423. The positioning block 1421 is disposed on a side of the sealing conveyer belt 124 opposite to the intercepting component 142, and the intercepting moving element 1423 is used for driving the intercepting block 1422 to move along a first direction, so that the intercepting block 1422 abuts against the positioning block 1421.
The side pressure assembly 144 includes a side pressure block 1441, a side pressure moving member 1442, and a side pressure slide rail 1443. The side pressure slide rail 1443 extends along the first direction, the side pressure moving member 1442 is slidably disposed on the side pressure slide rail 1443, and the side pressure moving member 1443 can drive the side pressure block 1441 to move along the length direction of the sealing and welding conveyor belt 124 and the first direction, so that the side pressure block 1441 is abutted to the battery case.
The positive pressure assembly 146 includes a front pressing block 1461 and a positive pressure moving member 1462, and the positive pressure moving member 1462 is configured to drive the front pressing block 1461 to move in a first direction, so that the front pressing block 1461 is pressed against the battery case.
The positioning block 1421, the intercepting block 1422, the side pressure block 1441 and the front pressure block 1461 are arranged for two reasons:
(1) in order to ensure the welding precision and improve the welding quality of the battery case, the battery case needs to be positioned accurately at the welding station 1241. As the battery case is conveyed to the welding station 1241, the battery case will continue to move along the seal conveyor belt 124 due to the inertia. In the welding process, some uncertain factors also exist to cause the battery shell to slightly shake, so that the welding effect is influenced. The positioning block 1421 and the intercepting block 1422 cooperate to intercept the battery case from the length direction of the sealing and welding conveyor belt 124, so as to prevent the battery case from continuing to move due to inertia after entering the welding station 1241. The side pressure blocks 1441 cooperate with the interception blocks 1422 to press the battery case from the first direction, thereby further preventing the battery case from being displaced along the sealing conveyer belt 124. The positioning block 1421 cooperates with the front pressing block 1461 to press the battery case along the sealing and welding direction of the conveying belt 124, so as to prevent the battery from swinging along the first direction. Therefore, the positioning block 1421, the intercepting block 1422, the side pressing block 1441 and the front pressing block 1461 surround the surface of the battery case, and limit the battery case in a space along the circumferential direction of the battery case, so that a better positioning effect is achieved.
(2) Normally, the battery case has a block structure. The positioning block 1421, the intercepting block 1422, the side pressing block 1441 and the front pressing block 1461 are all arranged in a block structure and move in a direction parallel to the surface of the battery case or a direction perpendicular to the surface of the battery case in the positioning process, so that the positioning block 1421, the intercepting block 1422, the side pressing block 1441 and the front pressing block 1461 have the largest contact area with the battery case, the battery case is conveniently and firmly positioned at the welding station 1241, and the welding precision is improved. Meanwhile, according to the pressure law, under the condition that the force is kept unchanged, the pressure can be reduced by increasing the stress area. Therefore, under the condition that the positioning block 1421, the intercepting block 1422, the side pressing block 1441 and the front pressing block 1461 have the largest contact area with the battery case, the pressure applied to the surface of the battery case is the smallest, so that the deformation of the battery case due to extrusion in the positioning process can be effectively prevented, and the surface precision of the battery case is improved conveniently.
Further, in the present embodiment, a groove 14212 is formed on the surface of the positioning block 1421, and the intercepting block 1422 can move along the first direction until being embedded in the groove 14212.
As the battery case enters the welding station 1241, the blocker 1422 moves in a first direction, directly intercepting the battery case from its direction of motion, such that the movement of the battery case along the seal conveyor belt 124 is forced to stop. However, if the interception force of the interception block 1422 is small or the interception speed is relatively delayed, the interception block may be driven by the battery case during interception and move along the length direction of the sealing and welding conveyor belt 124, thereby affecting the welding process. The intercepting block 1422 is embedded in the recess 14212, which effectively prevents the battery case from driving the intercepting block 1422 to move. Therefore, the method has better interception effect.
Specifically, the intercepting moving part 1423, the side pressure moving part 1442 and the positive pressure moving part 1462 are all telescopic cylinders, and telescopic shafts of the telescopic cylinders are respectively connected with the corresponding intercepting block 1422, the corresponding side pressure block 1441 and the corresponding front pressure block 1461. The telescopic cylinder is a common driver, is simple to use, occupies a small space, and is convenient for reducing the volume of the battery welding equipment 100.
Referring to fig. 10, the welding mechanism 150 is movably mounted to the frame 110, and the welding mechanism 150 is used for welding the battery cases at the welding stations 1241 of the two sealing belts 124.
In the present embodiment, the welding mechanism 150 includes a welding head 152, a first robot 154, a second robot 156, and a third robot 158. The first robot 154 may move the welding head 152 in a first direction, the second robot 156 may move the welding head 152 in a second direction, and the third robot 158 may move the welding head 152 in the direction of the sealing conveyor 124.
In this way, the welding head 152 is adjusted to a position having the best welding effect by reciprocating along the length direction, the first direction and the second direction of the sealing conveyer belt 124, thereby improving the welding quality of the battery case. The battery case has a top cover and a case, and the welding head 152 can weld the top cover of the battery case to the case by emitting a wave-shaped or spiral laser.
Further, the battery welding apparatus 100 further includes a protection nozzle 170, and the protection nozzle 170 is disposed at the welding end of the welding head 152 for blowing air in the second direction.
The protective nozzle 170 prevents the smoke generated during the welding process from floating outwards.
The sensor assembly 160 is disposed on the frame 110. The sensor assembly 160 includes a battery enclosure sensor 162, and the battery enclosure sensor 162 is used for detecting whether the sorting station 1221 and the emptying station are idle or occupied.
Specifically, the battery case sensor 162 may be a photoelectric sensor, a laser sensor, or another type of sensor, and it is only necessary to ensure that the working states of the sorting station 1221 and the emptying station can be detected as idle or occupied.
The controller is communicatively coupled to the sensor assembly 160, the positioning mechanism 140, and the welding mechanism 150. The controller is used for controlling the sorting mechanism 130 to sort the battery shells positioned at the sorting station 1221 to any one of the two sealing and welding conveyor belts 124 with the discharging station in an idle state.
The setting on the controller for battery welding equipment 100 just can work under the operating personnel condition need not to use, is convenient for reduce battery welding equipment 100's manufacturing cost, improves work efficiency, realizes battery case welded automation.
In this embodiment, the sensor assembly 160 further includes a housing sensor 164. The light emitting surface of the housing seat sensor 164 faces the surfaces of the feeding conveyer belt 122 and the sealing conveyer belt 124, and the housing seat sensor 164 is configured to send a signal to the controller when the housing seat 1222 enters the detection area of the housing seat sensor 164, so as to detect whether the working status of the feeding conveyer belt 122 and the sealing conveyer belt 124 is normal or faulty.
Since each step of the battery welding apparatus 100 is preset in an automated manufacturing process. Any one part is failed, and the whole production flow is affected. The shell seat sensor 164 is configured to monitor the operation of the feeding conveyor 122 and the sealing conveyor 124 in real time. Specifically, the shell seat sensor 164 is disposed on one side of the feeding conveyor belt 122 and the sealing conveyor belt 124. When the housing 1222 passes the detection area of the housing sensor 164, the housing sensor 164 sends a signal to the controller. The shell holder sensor 164 precisely positions the shell holder by sensing the instant the shell holder 1222 is sensed, and then positioning the shell holder 1222 after a fixed distance is traveled. If the positioning is accurate, the controller sends control signals to the sensor assembly 160, the positioning mechanism 140 and the welding mechanism 150, so as to control the normal operation of the process of the battery welding equipment 100. If the positioning is wrong, the controller gives an alarm and sends a stop signal, and the sensor assembly 160, the positioning mechanism 140 and the welding mechanism 150 stop working, so that the loss in the production process can be effectively reduced.
In this embodiment, the welding device further includes a laser range finder 180, the laser range finder 180 is movably disposed on the second manipulator 156 and is in communication with the controller, and the laser range finder 180 is configured to obtain a distance parameter between the laser range finder 180 and the battery case along a predetermined direction and feed the distance parameter back to the controller to calibrate a distance between the welding head 152 and the predetermined direction. In this embodiment, the predetermined direction is the second direction, which is also the height direction of the battery case. It should be noted that in other embodiments, the preset direction can be set according to the requirement.
The height of each battery case in the second direction is not uniform due to errors in the manufacturing process. In the process of realizing the automatic production of the battery welding device 100, the distance parameter of the welding head 152 to the battery shell is determined. Within the preset distance parameter, the battery shell has a better welding effect. The laser rangefinder 180 is configured to measure the distance between the battery enclosure and the welding head 152 in the second direction each time the battery enclosure enters the welding station 1241 and to feed data back to the controller. The controller controls the welding head 152 to move, adjusts the distance between the welding head 152 and the battery case along the second direction to be a preset distance, and then performs welding, so that a good welding effect is achieved.
Referring to fig. 11, the working principle of the laser range finder 180 is briefly described as follows:
normally, the laser rangefinder 180 is attached to the welding head 152 and remains fixed in position relative to the welding head 152. The laser rangefinder 180 alternates operation between the two seal belts 124. When the controller sends a control signal to the laser rangefinder 180, the laser rangefinder 180 moves to the welding station 1241 where laser rangefinding is desired. Starting from any point A on one side edge of the top cover of the battery case, the top cover of the battery case moves along the direction vertical to the edge until moving to a point B on the other edge opposite to the edge. In the process of moving from the point A to the point B in a straight line, the laser range finder 180 emits laser, the laser forms reflection on the surface of the top cover of the battery case, and the laser range finder 180 can measure and calculate the distance between the laser range finder 180 and the surface of the battery case along the second direction according to the angle difference of the laser reflection and feed back data to the controller. Since the relative position of the laser range finder 180 and the welding head 152 is kept unchanged, the controller may calculate the distance between the welding head 152 and the surface of the battery case along the second direction according to the data fed back by the laser range finder 180, thereby controlling the welding head 152 to move and adjust to a position suitable for welding. And during welding, the welding part is welded around the edge of the top cover of the welding part by taking the B as a starting point. And finally moving to a point B and stopping welding.
Referring also to fig. 12, the operation of the battery welding apparatus 100 will be briefly described as follows:
normally, the feeding conveyor 122 and the sealing conveyor 124 are circularly transported. After the previous process is completed, the battery shells are conveyed to the feeding conveyer belt 122 and are clamped in the clamping grooves 1223 of the shell seat 1222, so that the battery shells are prevented from being separated from the feeding conveyer belt 122 due to movement in the process of the feeding conveyer belt 122. The sorting station 1221 is provided with a battery case sensor 162, and when a battery case enters the sorting station 1221, the battery case sensor 162 located at the sorting station 1221 sends a trigger signal to the controller, and the controller controls the feeding conveyor belt 122 to stop moving. The controller is also communicatively coupled to the battery enclosure sensor 162 at the welding station 1241. When the battery shells exist in the discharging stations of the two sealing and welding conveyor belts 124, the controller sends a waiting signal to the sorting mechanism 130, and the sorting manipulator 132 is located at the initial position to wait. When a battery case exists in the discharging station of one of the sealing conveyer belts 124, the controller controls the sorting robot 132 to move from the initial position to the sorting station 1221, pick the battery case, and convey the battery case to the other sealing conveyer belt 124. When no battery shell exists in the discharging stations of the two sealing and welding conveyor belts 124, the controller controls the sorting manipulator 132 to convey the battery shell positioned at the sorting station 1221 into the shell seat of any one sealing and welding conveyor belt 124.
Generally, when the battery case is conveyed to one of the sealing conveyer belts 124, the other sealing conveyer belt 124 is in the welding process. The battery case is transported by the sealing conveyor belt 124 into an idle welding station 1241. The controller receives a signal from the battery enclosure sensor 162 of the welding station 1241 and triggers the positioning mechanism 140 to move to secure the battery enclosure to the welding station 1241. At the same time, the welding process of the other welding station 1241 is completed and the controller controls the welding head 152 to move. The laser rangefinder 180 performs laser rangefinding on the battery case located at the welding station 1241 and feeds data back to the controller. Further, the controller controls the welding head 152 to move according to the feedback data, and adjusts the distance of the welding head 152 in the second direction, so that the distance between the welding head 152 and the battery case in the second direction meets the preset requirement. Further, the controller controls the welding head 152 to move to complete the welding of the battery case. The positioning mechanism 140 is released, the sealing and welding conveyor belt 124 is started, and the welded battery shell enters the next process.
In the battery welding apparatus 100, the two sealing conveyer belts 124 and the feeding conveyer belt 122 are disposed in parallel, and the feeding conveyer belt 122 is disposed between the two sealing conveyer belts 124. When the discharge station of one of the sealing conveyer belts 124 is in an occupied state and the discharge station of the other sealing conveyer belt 124 is in an idle state, the sorting mechanism 130 sorts the battery case located at the sorting station 1221 to the discharge station of the other sealing conveyer belt, and then the positioning mechanism 140 moves to clamp and position the battery case transported to the welding station 1241 of the other sealing conveyer belt 124. And while clamping and positioning, the welding mechanism 130 moves at the welding station 1241 of one of the sealing and welding conveyor belts 124 and welds the battery case. When one of the sealing conveyer belts 124 completes the welding and the other sealing conveyer belt 124 completes the fixing of the battery case, the welding mechanism 150 moves to the welding station 1241 of the other sealing conveyer belt 124 for welding. Due to the arrangement of the two sealing and welding conveyor belts 124 and the two positioning mechanisms 140, the welding mechanism 150 works between the two sealing and welding conveyor belts 124 alternately, and the battery welding equipment can finish the clamping and welding of the battery case in the same time. Therefore, the above battery welding apparatus 100 can effectively improve the production efficiency.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A battery welding apparatus, characterized in that the battery welding apparatus comprises:
a frame for supporting;
the conveying mechanism is arranged on the rack and comprises a feeding conveying belt and two sealing and welding conveying belts which can do intermittent motion, the two sealing and welding conveying belts and the feeding conveying belt are arranged in parallel, the feeding conveying belt is provided with a sorting station, and the two sealing and welding conveying belts are provided with a discharging station and a welding station;
the sorting mechanism is arranged on the rack and used for sorting the battery shell positioned on the sorting station to any one of the two sealing and welding conveyer belts;
the two positioning mechanisms are arranged on the rack and respectively correspond to the welding stations of the two seal welding conveying belts, and the positioning mechanisms are used for clamping and positioning the battery shell positioned on the welding stations;
the welding mechanism is movably arranged on the rack and is used for respectively welding the battery shells positioned at the welding stations of the two seal welding conveying belts;
the sensor assembly is arranged on the rack and comprises a battery shell sensor, and the battery shell sensor is used for detecting whether the sorting station and the discharging station are idle or occupied in working states; and
and the controller is in communication connection with the sensor assembly, the positioning mechanism and the welding mechanism and is used for controlling the sorting mechanism to sort the battery shell positioned at the sorting station to any one of the two seal welding conveying belts with the emptying station in an idle state.
2. The battery welding apparatus according to claim 1, wherein the sensor assembly further comprises a housing seat sensor, a light emitting surface of the housing seat sensor faces the surfaces of the feeding conveyer belt and the sealing conveyer belt, and the housing seat sensor is configured to send a signal to the controller when the battery housing enters a detection area of the housing seat sensor, so as to detect whether the working states of the feeding conveyer belt and the sealing conveyer belt are normal or faulty.
3. The battery welding apparatus of claim 1, wherein the sorting mechanism comprises a sorting manipulator, a slide rail, and a sorting motion, the slide rail comprises a first slide rail and a second slide rail, the first slide rail extends in a first direction perpendicular to a length direction of the feeding conveyor belt, the second slide rail extends in a second direction perpendicular to the length direction of the feeding conveyor belt and the first direction, and the sorting motion is configured to drive the sorting manipulator to slide along the first slide rail and the second slide rail.
4. The battery welding apparatus of claim 1, wherein the positioning mechanism comprises:
the intercepting component comprises a positioning block, an intercepting block and an intercepting moving piece, the positioning block is arranged on one side of the sealing and welding conveyer belt opposite to the intercepting component, and the intercepting moving piece is used for driving the intercepting block to move along a first direction so that the intercepting block is abutted to the positioning block;
the side pressure assembly comprises a side pressure block, a side pressure moving part and a side pressure slide rail, the side pressure slide rail extends along the first direction, the side pressure moving part is slidably arranged on the side pressure slide rail, and the side pressure moving part can drive the side pressure block to move along the length direction of the sealing and welding conveying belt and the first direction so as to enable the side pressure block to be abutted against a battery shell; and
the positive pressure component comprises a front pressing block and a positive pressure moving piece, and the positive pressure moving piece is used for driving the front pressing block to move along the first direction so as to press and hold the front pressing block on the battery shell;
wherein the first direction is perpendicular to the feed conveyor belt length direction.
5. The battery welding apparatus of claim 1, wherein the welding mechanism comprises a welding head, a first robot, a second robot, and a third robot, wherein the first robot can move the welding head in a first direction, the second robot can move the welding head in a second direction, and the third robot can move the welding head in the direction of the seal conveyor;
wherein the first direction is perpendicular to the feeding conveyor belt length direction, and the second direction is perpendicular to the feeding conveyor belt length direction and the first direction.
6. The battery welding device according to claim 5, further comprising a laser distance meter movably disposed on the second manipulator and in communication with the controller, wherein the laser distance meter is configured to obtain a distance parameter between the laser distance meter and the battery case along a preset direction and feed the distance parameter back to the controller so as to calibrate a distance between the welding head and the battery case along the preset direction.
7. A battery welding method, applied to the battery welding apparatus according to any one of claims 1 to 6, comprising the steps of:
the feeding conveyer belt conveys the battery shell to a sorting station;
the sensor assembly detects that the working states of the discharging stations of the two seal welding conveying belts are idle or occupied;
the sorting mechanism sorts the battery shells positioned at the sorting station to any one of the two seal welding conveying belts with the emptying station idle;
the positioning mechanism clamps and positions the battery shell positioned at the welding station;
and the welding mechanism welds the battery shell positioned at the welding station according to a preset welding path.
8. The battery welding method according to claim 7, wherein the sorting mechanism sorts the battery cases located at the sorting station onto either one of the two seal welding conveyor belts where the discharge station is idle, comprising the steps of:
if the discharging stations of the two sealing and welding conveyor belts are occupied, the battery shells positioned at the sorting stations wait until the discharging stations on the sealing and welding conveyor belts are idle;
if one discharging station of the two sealing and welding conveyor belts is occupied, the battery shell positioned at the sorting station is sorted to the other sealing and welding conveyor belt;
and if the discharging stations of the two sealing and welding conveyor belts are idle, the battery shells positioned at the sorting station are sorted to any one sealing and welding conveyor belt.
9. The battery welding method of claim 7, wherein the welding mechanism further comprises, before the step of welding the battery case at the welding station according to a predetermined welding path, the steps of: and carrying out laser ranging on the battery shell along a preset direction to obtain position adjustment data of the welding head.
10. The battery welding method according to claim 9, wherein the step of performing laser ranging on the battery case along the preset direction to obtain position adjustment data of the welding head further comprises the steps of: and positioning and adjusting the welding joint along the preset direction according to the position adjustment data of the welding joint.
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| CN201810214411.9A CN108406177B (en) | 2018-03-15 | 2018-03-15 | Battery welding equipment and battery welding method |
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| CN109623212A (en) * | 2018-12-30 | 2019-04-16 | 杭州翰融智能科技有限公司 | A kind of feeding system |
| CN109530991B (en) * | 2018-12-30 | 2021-02-19 | 杭州翰融智能科技有限公司 | Welding production system |
| CN109530992B (en) * | 2018-12-30 | 2021-02-19 | 杭州翰融智能科技有限公司 | Welding production system |
| CN109530995B (en) * | 2018-12-30 | 2021-03-02 | 杭州翰融智能科技有限公司 | Welding production system |
| CN109530996B (en) * | 2018-12-30 | 2021-05-11 | 杭州翰融智能科技有限公司 | Welding production system |
| CN109530993B (en) * | 2018-12-30 | 2021-03-02 | 杭州翰融智能科技有限公司 | Welding production system |
| CN109530994B (en) * | 2018-12-30 | 2021-02-19 | 杭州翰融智能科技有限公司 | Welding production system |
| CN110814609B (en) * | 2019-10-14 | 2021-11-09 | 广州中国科学院工业技术研究院 | Accurate welding method and device for power battery |
| CN111141743A (en) * | 2019-12-31 | 2020-05-12 | 四川索牌科技股份有限公司 | Envelope detection equipment and detection method thereof |
| CN112518180A (en) * | 2020-11-30 | 2021-03-19 | 辽宁忠旺特种车辆制造有限公司 | Layout method for welding production line of heavy truck protective beam |
| CN218016641U (en) * | 2022-03-30 | 2022-12-13 | 无锡先导智能装备股份有限公司 | Welding device |
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| ES2301542T3 (en) * | 2001-05-18 | 2008-07-01 | Metalquimia, S.A. | INSTALLATION FOR THE TREATMENT AND PACKAGING OF CARNIC MATTER IN CONTINUOUS REGIME. |
| CN202651264U (en) * | 2012-03-05 | 2013-01-02 | 东莞市斯宇自动化设备有限公司 | Lithium battery automatic weld line |
| CN203679758U (en) * | 2013-10-31 | 2014-07-02 | 刘辉国 | Automatic spot welding equipment for batteries |
| CN106003024B (en) * | 2016-05-26 | 2017-11-28 | 北京新长征天高智机科技有限公司 | A kind of multi-robot garbage sorting control system |
| CN106737664B (en) * | 2016-11-25 | 2020-02-14 | 中国科学院自动化研究所 | Delta robot control method and system for sorting multiple types of workpieces |
| CN206558618U (en) * | 2017-03-20 | 2017-10-13 | 惠州市德赛自动化技术有限公司 | One kind cuts welding equipment automatically |
| CN206632513U (en) * | 2017-03-27 | 2017-11-14 | 深圳市朗能动力技术有限公司 | Battery core module welding equipment |
| CN107364711A (en) * | 2017-08-25 | 2017-11-21 | 深圳市光大激光科技股份有限公司 | A kind of sorting device and its method for sorting |
| CN107672869B (en) * | 2017-09-29 | 2023-08-01 | 广东太力科技集团股份有限公司 | Bag body folding machine and bag body folding method |
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