Laser Spot Welding Machine
1、Equipment Overview
This equipment is used for sealing welding and liquid injection hole welding of prismatic battery top cover. It is a semi-automatic equipment. The top cover of the incoming material has been manually buckled into the aluminum shell. Taking the sealing surface of the battery as the upper benchmark, it is positioned from the top of the bottom plate of the cell. After laser welding, it is manually inspected and judged. This equipment can quickly change the fixture and is suitable for welding of various models of products.
2、Basic Parameters
1. Equipment List
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SN
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Item
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Qty
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Remark
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1.
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Welding laser
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1set
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|
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2.
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Welded joint
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1set
|
|
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3.
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cooler
|
1set
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|
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4.
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Motion module
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1set
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|
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5.
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servo motor
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1set
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|
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6.
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Frame + plate + shield
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1set
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|
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7.
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Observation CCD+Display
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1set
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|
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8.
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Industrial dust collector
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1set
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|
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9.
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Motion control of welding platform
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1set
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|
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10.
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Welding control software
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1set
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|
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11.
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Laser waveform control card
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1set
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|
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12.
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IPC
|
1set
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|
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13.
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Fixture
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1set
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2. Configure power supply
3 phase 380V；Voltage fluctuation is less than ±10%；power：8KVA；
3. Compressed air
0.6~0.8MPa
4. Environmental requirements
ambient temperature 20～40℃；relative humidity 5～55％HR；
3、Incoming parameters
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SN
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Item
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Specification
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Remark
|
|
1
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Battery size
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L 166mm，
T 22mm，
H 234mm
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Customize according to customer’s size
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4、Process performance
1. Hardware accuracy
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SN
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Item
|
Specification
|
Remark
|
|
1.
|
Effective working range of workbench
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L 300mm×W 300mm×H 200mm
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|
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2.
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Repeated positioning accuracy of laser welding joint
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≤±0.02mm
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|
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3.
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Qualified rate
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98.5%
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4.
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efficiency
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|
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5.
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Tooling fixture can be replaced
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6.
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Welding method
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Vertical welding and side welding (corresponding fixture is required)
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7.
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Laser welding machine power
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1000W
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|
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8.
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Focal length adjustment accuracy of welding joint
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0.02mm
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|
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9.
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Welding parameter memory function, switching products that have been done without programming again
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|
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10.
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Equipped with dust and smoke removal function
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|
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11.
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Equipped with safety door and safety grating to ensure safe work
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12.
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Noise
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≤75db
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13.
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failure rate
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Failure rate = (failure shutdown duration / equipment service duration) ＜ 2%
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|
2. Product accuracy
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SN
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Item
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Standard
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|
1.
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Welding flanging width
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＜0.3mm
|
|
2.
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Weld penetration and width
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Penetration 0.5~1.4mm，Melt width: 1~1.6mm，
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|
3.
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Weld pressure resistance (tensile strength)
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Withstand voltage＞1.1Mpa
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|
4.
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Appearance and welding quality
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After welding, the weld shall be free of defects such as pits, broken welds, misalignment, and explosion points, and the weld shall be smooth and flat, which will not cause serious deformation of the shell. There is no welding slag in the shell after welding, and the laser does not burn the diaphragm and high-temperature tape inside the shell
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5、Configuration of main components
1. Soft connection fixture part
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SN
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Description
|
Spec
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|
1.
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Manually load the material, place the products in the positioning fixture in turn, install the anti welding slag shield outside the electric core to prevent the welding slag from splashing onto the surface of the battery, and press it back and forth with the cylinder to prevent scratching the battery
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|
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2.
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The clamping part is not in overall contact with the cell, and the middle is hollowed out to prevent excessive extrusion pressure on the cell; Manual blanking: when the battery moves to blanking, the battery cylinder unlocks, the battery cell pops up, and the material is taken manually. The short side is clamped by a rotating cylinder, and the battery is placed and taken from the side, which is convenient to operate.
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2.Three axis welding platform
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SN
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Description
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Remark
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|
1.
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The laser output head is driven by a three-axis high-precision mechanical module to ensure the accuracy of the hardware; Using high-precision algorithm and controller, accurate laser excitation power and path; Press the assembly mechanism up before welding, and then fully weld the top cover to ensure the product qualification rate; Anti flame retardant materials are used for the exhaust pipe and filter, and steel rings are used for the connection parts.
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3.Frame cover and man-machine interface
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SN
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Description
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Remark
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|
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The upper cover of the equipment is composed of sheet metal and Tan acrylic panels, and safety gratings are installed to ensure the safety of operators. The human-machine interface of the equipment is designed according to the existing structure of the company, and the welding parameters are visual and traceable.
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4.Three view part of equipment
5、Equipment capacity requirements
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SN
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Item
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Index
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Remark
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|
1.
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Time efficiency = 
Actual operation time: load time - planned downtime (failure, material switching)
Load time: production hours - planned downtime
Production hours: normal working hours
Planned downtime: morning and evening, rest, spot check, cleaning, etc
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≥99.00%
|
|
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2.
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Performance improvement=  
Theoretical tempo: theoretical production time of a single product
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100%
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|
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3.
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Product qualification rate=  
Fixed loss: tape splicing, coil changing, etc
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≥99.50%
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|
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4.
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CMK Equipment capacity index
CMK index only considers short-term dispersion and emphasizes the influence of equipment factors on product quality.
Test requirements: the extracted data is continuous; It is assumed that the operator, measuring tools and raw materials are not affected; Only consider the influence of a single factor of the equipment. (that is, the operator must be skilled and competent; the measuring tools must meet the requirements and have been calibrated; the same batch of materials; and the inspectors meet the requirements.)
Generally, 10 groups of 100 samples are sampled for measurement within about one hour after the production of the machine is stable.
  
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≥1.67
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5.
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Equipment operation plan
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300 day/year,2 shifts,（11.5）H/ shift
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6.
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Equipment life
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10 Years
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7.
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Operator
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|
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8.
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Equipment noise
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≤75dB
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6、Brand of components and spare parts
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SN
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Name
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Brand
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Remark
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|
1
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Welding laser
|
创鑫 Chuangxin
|
|
|
2
|
Welding head
|
万顺兴 Wan Shunxing
|
|
|
3
|
cooling-water machine
|
东露阳 Dongluyang
|
|
|
4
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Motion module
|
上银 Shangyin
|
|
|
5
|
servo motor
|
松下 Panasonic
|
|
|
6
|
Frame + plate + shield
|
customized
|
|
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7
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Observe the CCD+ display
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customized
|
|
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8
|
Dust collector
|
鸿海 foxconn
|
|
|
9
|
Motion control of welding platform
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customized
|
|
|
10
|
Welding control software
|
|
|
|
11
|
Laser waveform control card
|
customized
|
|
|
12
|
IPC
|
Advantech / Lenovo
|
|
|
13
|
Fixture
|
customized
|
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7、Product Images
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IPv6 network supported
