Component definition

1, with packaging and internal connection

2, can provide direct current output alone

3, with the smallest indivisible photovoltaic cell combination device

  Component classification

1, according to the type of solar cell classification

Crystalline silicon (single, polycrystalline silicon) solar photovoltaic modules

Amorphous silicon thin film solar photovoltaic modules

Gallium arsenide photovoltaic modules, etc.;

2, according to the packaging material and process classification

  Epoxy resin package panels

  Laminated package battery components

3, according to the use of different classification

Ordinary solar photovoltaic modules

Building materials type solar photovoltaic modules.

  Among them, building materials type solar photovoltaic modules are divided into single-sided glass transparent photovoltaic modules, double-sided laminated glass photovoltaic modules and double-sided hollow glass photovoltaic modules.

  Component FAQs

1. Component surface is dirty
2. Solar cell color difference
3. The solar panel has bubbles, EVA has delamination phenomenon

Solar panel common problem causes, effects and measures

【 Reasons for reticular cleft 】

1. The battery is caused by external forces during welding or transportation.

 2. The battery is suddenly high in a short period of time without preheating at low temperature

   After warming, there is expansion resulting in hidden cracking phenomenon

  Component impact:

 1. Mesh hidden cracks will affect component power attenuation.

  2. Mesh cracks appear for a long time, and the appearance of hot spots directly affects the performance of the components

 Preventive measures:

 1. In the production process to avoid the battery too much external force collision.

 2. During the welding process, the battery should be insulated in advance (hand welding)

  3.EL test should be strictly required.

【 Reasons for EVA Delamination 】

 1. The crosslinking degree is not qualified (such as low laminating machine temperature, short laminating time, etc.)

  2.EVA, glass, backboard and other raw material surface caused by foreign bodies.

  3. The uneven composition of EVA raw materials (such as ethylene and vinyl acetate) causes it to be unable to dissolve at normal temperatures resulting in delamination

  4. The amount of flux is too much, and the main gate line delamination occurs when it encounters high temperature in the outside world for a long time

 Component impact:

1. A small delamination area affects the failure of components at high power. When the delamination area is large, it will directly lead to component failure and scrap

 Preventive measures:

 1. Strictly control the temperature, time and other important parameters of the laminating machine, and regularly perform cross-linking degree experiments according to the requirements, and control the cross-linking degree within 85%±5%.

 2. Strengthen the improvement of raw material suppliers and raw material inspection.

 3. Strengthen the appearance inspection of finished products in the process

 4. Strictly control the flux dosage, try not to exceed 0.3mm on both sides of the main grid line

【 Poor silica gel causes delamination & battery cross hidden cracks 】

 1. The crosslinking degree is not qualified (such as low laminating machine temperature, short laminating time, etc.)

 2.EVA, glass, backboard and other raw material surface caused by foreign bodies.

 3. There is a gap in the frame glue, and the edge of the component is delaminated after the rain enters the gap and the component is heated for a long time

 4. The battery or component is cracked by external forces

 Component impact:

 1. Stratification may cause water to enter the components, resulting in internal short circuit of the components, and thus scrap the components

 2. The cross hidden crack will cause the chip to make the battery fail, and the power attenuation of the component directly affects the performance of the component

 Preventive measures:

 1. Strictly control the temperature, time and other important parameters of the laminating machine, and regularly do cross-linking degree experiments according to the requirements.

 2. Strengthen the improvement of raw material suppliers and raw material inspection.

 3. Strengthen the appearance inspection of finished products in the process

 4. The final assembly requires strict operation techniques, and the silicone needs to be completely sealed

 5. Avoid external force collision when lifting components.

【 Causes of component burnout 】

 1. The contact area between the busbar and the welding strip is small or the welding resistance increases and heat causes the component to burn

 Component impact:

 1. There is no impact on the components in a short period of time, and the components will be burned out for a long time on the external power generation system and eventually lead to scrap

 Preventive measures:

 1. Weld the bus bar and repair the components in strict accordance with the requirements of the operation instructions to avoid the welding area is too small during welding.

 2. After the welding is completed, it is necessary to check whether the welding is ok.

 3. Strictly control the soldering iron problem within the control range (375±15) and welding time 2-3s.

 【 Component junction box fire cause 】

 1. The lead is not jammed tightly in the card slot and a spark is ignited.

 2. The welding area of the lead and junction box is too small, and the resistance is too large, resulting in fire.

 3. If the lead is too long and the plastic part of the junction box is heated for a long time, a fire may occur

 Component impact:

 1. The fire directly causes the component to be scrapped, which may cause a serious fire.

 Preventive measures:

 1. Insert the cable into the card slot strictly according to sop

 2. The welding area of the outlet cable and junction box is at least 20 square mm.

 3. Strictly control the length of the lead line to meet the requirements of the drawing, and operate according to sop.

 Keep the lead cable away from the plastic parts of the junction box.

 【 Battery splinter cause 】

 1. Cracks caused by improper operation during welding

 2. Component splinters caused by incorrect handling of personnel

 3. The laminate module is faulty

 Component impact:

 1. Partial failure of the fragment affects the power attenuation of the component,

 2. Single battery power attenuation or complete failure affects component power attenuation

 Preventive measures:

 1. Strictly follow sop in the welding and rework areas of the bus bar

 2. Personnel lift components strictly in accordance with the process requirements.

 3. Ensure regular maintenance of the laminating machine. Every spare part replacement of the equipment should be strictly done after the first part is confirmed ok in production.

 4.EL test strictly check inspection, prohibit bad leakage.

【 Reasons for excessive amount of battery flux 】

 1. Welding machine adjustment flux injection amount is too large

 2. Personnel apply too much flux during repair

 Component impact:

 1. EVA delamination affecting the main grid line position of components,

 2. The components appear lightning stripes and black spots after a long time on the power generation system, affecting the power attenuation of the components, reducing the life of the components or causing scrapping

 Preventive measures:

 1. Adjust the flux injection amount of the welding machine. Check regularly.

 2. In the repair area, please use the designated welding pen when replacing the battery. Do not apply the flux with a large-head brush.

【 Reasons for virtual welding and over-welding 】

 1. Too much welding temperature or too little flux application or too fast speed will lead to virtual welding

 2. Too high welding temperature or too long welding time will lead to over-welding phenomenon.

Component impact:

 1. Virtual welding occurs in a short time of delamination between the welding strip and the battery, affecting the power attenuation or failure of the component.

 2. Overwelding causes the internal electrode of the battery to be damaged, which directly affects the power attenuation of the component and reduces the life of the component or causes scrapping

 Preventive measures:

 1. Ensure the parameter setting of welding machine temperature, flux injection amount and welding time. And have regular check-ups,

 2. In the repair area, ensure the temperature of the soldering iron, welding time and use the correct welding pen to apply the flux.

 3. Strengthen EL inspection to avoid bad leakage of the next process.

【 Reasons for welding tape deviation or warped fragment after welding 】

 1. Abnormal positioning of the welding machine will cause welding tape deviation

 2. The main grid line deviation of the battery raw material will cause the welding strip to offset the main grid line after welding

 3. The temperature is too high, and the bending hardness of the welding belt is too high, causing the battery sheet to bend after welding

 Component impact:

 1. Offset will lead to reduced contact between the welding tape and the battery area, resulting in delamination or power attenuation

 2. Overwelding causes the internal electrode of the battery to be damaged, which directly affects the power attenuation of the component and reduces the life of the component or causes scrapping

 3. Battery fragments may be bent after welding

 Preventive measures:

 1. Regularly check the positioning system of the welding machine.

 2. Strengthen incoming inspection of battery sheet and welding tape raw materials,

 【 Reasons for component tempered glass explosion and junction box wire breakage 】

 1. The components are severely impacted by external forces during handling, resulting in glass blasting

 2. There are impurities in the glass raw material and the raw material self-explosion.

 3. The conductor is not placed in the specified position, resulting in the back compression of the conductor.

 Component impact:

 1. Glass blasting components are directly scrapped,

 2. The conductor is damaged, resulting in power failure of the component or a dangerous accident of leakage and connection

 Preventive measures:

 1. Handle the component gently during lifting and placing. Avoid collision by external forces.

 2. Strengthen the inspection and testing of glass raw materials,

 3. The wire must be placed in strict accordance with the requirements. Avoid fragmentation of components.

【 Causes of bubbles 】

 1. The vacuum temperature time of the laminating machine is too short, and the temperature setting is too low or too high, bubbles will appear

 2. The interior is not clean and foreign bodies will appear bubbles.

 3. Too large or too small upper hand insulation strips may cause air bubbles.

 Component impact:

 1. Component bubbles affect delamination. Severe results in scrapping

 Preventive measures:

 1. The vacuum time and temperature parameters of the laminating machine should be set in strict accordance with the process requirements.

 2. Pay attention to 5s cleaning in welding and laminating process,

 3. Cut and check the insulation strips strictly according to the cutting size.

【 Causes of hot spots and Delamination 】

 1. When the component is repaired, foreign bodies on the surface will cause hot spots

2. Insufficient welding adhesion will cause hot spots.

3. Parameters such as delamination temperature and time do not meet standards

Component impact:

1. Heat spots lead to component power attenuation failure or directly lead to component burn and scrap.

2. Delamination leads to power attenuation or failure of the component, affecting the life of the component and causing the component to be scrapped.

Preventive measures:

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