Wuhan YOHA Laser Technology Co., Ltd
4th Floor, Section 2 Building, No. 777 Guanggu 3rd Road, Donghu New Technology Development Zone, Wuhan, Hubei
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Staff Information
No. Staff: 60
Company Description
Wuhan Yoha Laser Technology Co., Ltd (YOHA-Solar), located in Wuhan high-tech industry zone, with more than 15 years background engaged in R&D, manufacturing laser and solar equipment.

Our Major equipment Including:
1) Solar Cell Laser Cutting Machine
2) Solar Cell Tester, Solar Module Tester/Sun Simulator
3) Infrared Cell/MODULE EL Testers
4) Turkey Production Line
5) Other Customized Equipment For Solar Industry

We adhere to the "professional, Best quality, Best service" business philosophy, relying on the "unity, hard work, pragmatic, innovative" spirit of enterprise dedicated to providing customers with first-class machines. a series of industrial laser and solar panel processing equipment with advanced technology level have been successfully developed with more than 15 years of production and scientific research experience such as high-speed laser marking machine, laser precision cutting machine, solar wafer laser cutter, solar cell tester, solar module IV and EL tester and other high-tech equipment.

we follows the business philosophy of "technological innovation, product innovation, service innovation", strives to provide customers with first-class products and perfect service, to maximize customer benefit and create a better future with customers hand in hand!
We hope to cooperate with you soon!
Business Details
Equipment Types
Cell Production Equipment: Cell Sorter, Cell Tester
Crystalline Panel Production Equipment: Panel Turn-Key Production Line, Panel Solar Simulator, Cell Laser Scriber/Cutter, Assembly Line, EL Tester
Products


Ⅰ. Perc Cell Solar Module Simulator



Application

Mainly used in automatic test and result record of solar

mono-crystalline silicon, poly-crystalline silicon solar cell

module and thin-film module.

Products Features:

1. Flash impulse continuous adjustable range 0-60ms       

2. Four-line measurement; 14-bit 4-channel high-speed synchronous acquisition card, 8000 data collecting point;     

3. 10 parameters display;measured parameter display in tabulation and graphic way;            

4. Irradiance automatically compensating; temperature automatically compensating;           

5. Voice counts off and prompts of flash time;counting prompts of flash time     

6. 24 consecutive hours of work, working life of imports Xenon lamp is 300,000 times of flash

7. Patented Design with high quality key components

8. Touch-screen control

9. Independent explosion proof control cabinet 

10.Dell Computer


Model

YHMT-AAA

Feature

Lamp Spectrum

In line with IEC60904-92007(A Grade)

1. Measurable parameters: I-V curve, short circuit current, open circuit voltage, peak power, peak power point voltage, current, fixed voltage current, filling factor, conversion efficiency, light intensity and environmental temperature.           

2. Automatic classification and display function. It can be automatically classified according to the fixed voltage and current, and the results of the classification can be displayed directly on the test cabinet by digital display. Easy to use in production line.           

3. Solar cells are connected by four wires to ensure the current accuracy.           

4. Measuring temperature and light intensity at the same time to ensure the accuracy of automatic correction of solar cell temperature and light intensity.          

5. Self-tuning system with manual input compensation parameters, automatic/manual temperature compensation, automatic light intensity compensation, etc.

Light Intensity

1000W/m²(700W/m²-1200W/m²)

Light intensity non-uniformity

≤±2%[A]

Instability degree of irradiation

≤±2%[A]

Test results consistency

≤±0.5%[A]

Test error of electrical properties

≤1% A

Single flash time

 60ms

Effective Test Range

2000mm×1500mm/20W~500W

Measuring Voltage

0-200V(Resolution 1mV)

Measuring current

200mA-20A(Resolution 1mA)

Environmental temperature

15℃~30℃

Test Parameters

Isc, Voc,Pmax, Vm,Im,FF,EFF,Temp,Rs,Rsh

power

220V/50Hz(60Hz)



Ⅱ. Automatic Solar Module EL and AOI Appearance Tester



Applications:

The EL detection system consists of 4 near-infrared cameras(high quality 0.4mm/pixel), and the appearance AOI detection system consists of another 4 visible light cameras(high quality 0.09mm/pixel), which collect EL infrared images and visible light images respectively.

The complete EL image and visible image of the solar panel are obtained through multi-station image acquisition and multi-camera image splicing,. The system has high imaging quality and small window to view details, which is conducive to the determination of EL defects and appearance defects of solar panel.

The EL detection and AOI appearance detection of PV panel can be independent detection system or combined into a set of detection system.

Specification

1. Test Items: various types of solar panel;

2. Maximum field of vision: 2000mmx1000mm;

3. EL defect types: Hidden crack, broken grid, black center, black spot, dark film, debris, etc;

4. Types of AOI appearance defects: foreign matter, damage, exposed white, color difference, etc;

5. Detection efficiency: detection time of single panel is about 20.0 seconds;

6. The communication between the network port and PLC can be integrated with the production line;

7. Program controlled  EL power supply, power parameters can be adjusted by the program;

8. The type formula is flexible and can be compatible with various product models;

9. With database function, test results can be saved and queried

10. With the function of small window to view details;

11. The software interface is friendly and easy to operate;

12. EL detection system consists of four near-infrared industrial cameras, four high-definition lenses, filters and detection software;

13. The appearance inspection system consists of four visible light cameras, four high-definition lenses, light sources, filters and inspection software.

Feature

1. Special light source and image acquisition system, stable and high quality image;

2. Sony CCD chips

3. The image mosaic is accurate without obvious dislocation;

4.  High detection efficiency, easy to integrate with production line;

5.  Intelligent image processing algorithm, stable and reliable detection results;

6. Compatible with a variety of products and models, effectively reduce enterprise costs;

A-grade Panel EL Image


A-Grade Panel AOI Appearance Image


Defect EL Images:

like Hidden crack, broken grid, black center, black spot, dark film, debris etc:


Defect AOI Appearance image:

Foreign matter, damage, exposed white, color difference, etc

 


Ⅲ. Solar PERC Cell Tester

Technical specifications:

Application: 

Used to test the electrical performance of Mono-Si or Poly-si

solar cell pieces and record the results in files. 

Type specification YHCT-AAA
Machine Feature:
 
A grade spectrum
A grade unevenness degree of irradiance 
Four-line measure, 14-bit 4-channel high speed synchronous acquisition card
10 parameters display and Measurement Parameter display in Tabulation and

Graphic way
Pneumatic and buffering contact
Temperature automatically compensation
Voice counts off and prompts, Counting prompt of flash
24hours Continuous work
Specifications :
Solar Cell Tester
1. Test Size: 200X200mm
2. Test rang: 0.1W-5W
Package Measurement: 94X80X210 CM
Cross Weight: 158KG
Technical Parameter:

Lamp Spectrum: In line with IEC60904-9 and JISC8933 ( A Grade) 
Light Intensity: 100mW/cm2 (continuous adjustable range 20-120W/cm2
Light intensity non-uniformity: ≤ ± 2% A
Instability degree of irradiation: ≤ ± 2% A
Test result consistency: ≤ ± 0.5% A
Test error of electrical properties: ≤ 2% 
Single flash time: 10-30ms
Effective test range: 200X200mm(0.1-5W)
Measuring voltage: 0-0.8V(Resolution 1mV)
Measuring current: 0~0.8V (Resolution 1mV)
Test parameters: Isc, Voc, Pmax, Vm, Im, FF, EFF, Temp, Rs, RSH
Power demand: 380V(220V)/50HZ(60HZ)/3KVA


Automatic Solar Module EL Tester

Model: YHEL-A-2400



Applications:

Test and inspect the micro-crack, breakage, broken fingers of the cells and pseudo-soldering of the modules; also applicable to check or find the mismatch of the cells or strings with different power rating.

Equipment Features

- Imported CCD chips ensured superior imaging and longer useful life - High precision of multifunctional control card can be ensured the coordination work of electric control system and image acquisition system

- The solar panel can be automatically transferred, connected and image collected.

- High reliability, high precision, realized seamless connection with the automatic production

lines, reduces labor costs, maximized productivity

- Imported top key components of the system control, motive power transmission, pneumatic drive, sensing and measurement; ensures the equipment work in more stable performance and longer useful life.

Technical Specifications:

Product model

YHEL-2400

 

Resolution

6016x4000 Megapixels

 

Shooting mode

Single or Multiple camera

 

Sensitivity

Can detect crack width less than 0.2um

 

Effective test area

1200*2000mm

 

Image acquisition time

1~60s can be adjusted

 

Machine size

2300*2000*1100mm

 

Power

Single-phrase 220V 10A, max load voltage 60V, max load currency10A

 

Working environment temperature

-10~40℃

 

SNR

>56dB

 

Humidity

20 ~70% 

 

Test parameters

Target, Gain, Time, Gamma, Contrast, Data wide              

 

Include

Cabinet(Include infrared camera)+Computer + Software

 


Ⅴ. Solar Simulator


Application
Mainly used in automatic test and result record of solar

mono-crystalline silicon, poly-crystalline silicon solar cell

module and thin-film module.

Products Features:

1. Flash impulse continuous adjustable range 10-100ms       

2. Four-line measurement; 14-bit 4-channel high-speed synchronous

acquisition card, 8000 data collecting point;     

3. 10 parameters display;measured parameter display in tabulation and graphic way;            

4. Irradiance automatically compensating; temperature automatically compensating;           

5. Voice counts off and prompts of flash time;counting prompts of flash time     

6. 24 consecutive hours of work, working life of imports Xenon lamp is 300,000 times of flash

Technical Data:

 

Model

 YHMT-AAA                                    YHMT-AA

Lamp Spectrum

In line with IEC60904-9 and JISC8933(A Grade)

Light Intensity

100mW/cm2(continuous adjustable range20-120mW/cm2)

Light intensity non-uniformity

≤±2%[A]                                               ±3%

Instability degree of irradiation

≤±2%[A]                                                ±2%

Test results consistency

≤±0.5%[A]                                             ±1%

Test error of electrical properties

≤2%

Single flash time

10ms-30ms                       10ms

Effective Test Range

1200*2000nm /5W-300W

Measuring Voltage

0-100V(Resolution 1mV)

Measuring current

0-20A(Resolution 1mA)

Environmental temperature

15℃~30℃

Test Parameters

Isc, Voc,Pmax, Vm,Im,FF,EFF,Temp,Rs,Rsh

power

220V/50Hz(60Hz)

 

Equipment, machine configuration:

1. Test Host(With electronic load):1 set

2. Light source(With optical system):2 Pieces

3. PC:1 set

4. High-speed data collection A/D plant:1 piece

5. Dedicated measurement software:1 set

6. Test bench:1 set

7. Standard Battery(Compensation and correction for the irradiance uniformity measurements):1 piece

8. Size:2.64*1.48*1.2m (Host)+0.86*0.61*0.95m(Spare parts)

9. G.weight:400KGS+25KGS


Last Update: 28 Jun 2020