Laboratory Laser Welder For Battery Prismatic Cell Top Case Welding

No

Item

Specification

Note

1

Blueprint cell size

Length 153.5mm,

Thickness 54mm,

Height 173.5mm

No

Item

Technical parameter

Note

1

Effective working range of the workbench

300mm long × 300mm wide × 200mm high

2

Repeated positioning accuracy of laser welded joints

≤ ± 0.02mm

3

Qualification rate

98.5%

4

efficiency

50-70mm/s

5

The fixture can be replaced

6

Welding method

Vertical welding and side welding (corresponding fixtures are required)

7

Laser welding machine power

4000W

8

Welding head focal length adjustment accuracy

0.02mm

9

Welding parameter memory function, no need to program again to switch products that have already been made

10

Equipped with dust and smoke removal function

11

Equipped with safety door and Light curtain to ensure safe work

12

Noise 

≤ 75db

13

Failure rate

Fault rate=(fault shutdown time/equipment usage time)<2%

No

Item

Standard 

1

Welding flange width

＜ 0.3mm

2

Weld penetration depth

Melting depth 0.5~1.4mm, melting width 1~1.6mm,

3

Weld seam pressure resistance (tensile strength)

Withstand voltage ＞ 1.1Mpa

4

Appearance and welding quality

After welding, the weld seam is free of defects such as pits, broken welds, misalignment, and bursting points, and the weld seam is smooth and flat, without causing serious deformation of the shell. After welding, there is no welding slag inside the shell, and the laser does not burn the internal diaphragm and high-temperature tape of the shell

No

Description

Parameter

1

Manually load the material, using the sealing surface of the battery cell as the benchmark, and lift it up from the bottom of the battery cell to ensure consistency in the upper benchmark; The long side cylinder is locked, the short side cylinder is locked, and the upper reference cylinder is unlocked. The lower end of the fixture adopts a spring positioning mechanism, with elastic deformation of the spring to ensure that the battery cell shell is not scratched during precise positioning;

2

Pre weld the cover plate and shell first, fix the position, and then fully weld.

3

The clamping part is not in overall contact with the battery cell, and the middle is hollowed out to prevent excessive squeezing pressure on the battery cell; Manual cutting, the battery moves to the cutting position, the battery cylinder unlocks, the battery cell pops up, and the material is manually picked up. The short side is clamped by a rotating cylinder, and the battery cell is placed from the side for easy operation.

No

Description

Parameter

1

The laser output head is driven by a three-axis high-precision mechanical module to ensure hardware accuracy, and comes with its own; Adopting high-precision algorithms and controllers, precise laser excitation power and path; Before welding, press the installation mechanism and tighten the top cover before full welding to ensure the product qualification rate; The exhaust duct and filter are made of flame-retardant materials, and the connecting parts are connected with steel rings.

No

Description

Parameter

1

The upper cover of the equipment is composed of sheet metal and tawny acrylic panels, and Light curtain is installed to ensure the safety of operators. The man-machine interface of the equipment is designed according to the existing structure of the company, and the welding parameters are visible and traceable.

No

Item

Index

Note

1

Time movement=actual movement time/load time * 100%

Actual operating time: load time - planned downtime (faults, material switching)

Load time: Production hours - Planned downtime

Production hours: normal working hours

Planned downtime: morning and evening, rest, spot checks, cleaning, etc

≥99.00%

2

2. Performance time=Theoretical beat * Actual production quantity/Actual production time * 100%

Theoretical beat: Theoretical production time for a single product

100%

3

Product qualification rate=Number of qualified products produced/(Input quantity - Fixed loss - Startup debugging - Sampling quantity) * 100%

Fixed losses: tape splicing, roll changing, etc

≥99.50%

4

CMK Equipment Capability Index

The CMK index only considers short-term dispersion and emphasizes the impact of equipment factors on product quality.

Test requirements: The extracted data is continuous; Assuming that the operator, measuring tools, and raw materials are not affected; Only consider the influence of a single device factor. (i.e., the operator must be proficient and competent; the measuring tools must meet the requirements and have been calibrated; the same batch of materials; and the inspection personnel must meet the requirements.)

Generally, 10 sets of 100 samples are sampled for measurement within approximately one hour after the stable production of the machine.

≥1.67

5

Equipment operation plan

300 days/year, 2 shifts, (11.5) hours/shift

6

Equipment lifespan

10 years

7

Operator

8

Equipment noise

≤ 75dB

No

Name 

Brand 

Place of origin

1

Welding laser

Chuangxin

2

Welding head

Wan Shunxing

3

Chiller

Dongluoyang

4

Motion module

Shangyin

5

servo motor

Xinjie/Huichuan/Panasonic

6

Rack+large board+cover

customization

7

Observing the CCD+display

customization

8

Dust collector

foxconn

9

Welding platform motion control

customization

10

Welding control software

customization

11

Laser waveform control card

customization

12

Industrial computer

Advantech/Lenovo

13

Fixture

customization

No

Name

Brand

Quantity

Note

1

Hex key

1 set

2

No

Name 

model

Quantity 

Note

1

Top cover welding machine

TMAX-HJ-4000

1 set

2

Chiller

Dongluoyang

1 unit

3

Dust collector

foxconn

1 unit