3. Introduction to 4 Bus bar cells
www.jinkosolar.com 3
- 4 BB- 3 BB
4BB
APPLICABLE TO THE WHOLE PORTFOLIO (STANDARD,
EAGLE, EAGLE+ AND SMART)
3 BB PHASE OUT ALONG Q2 AND GRADUAL PHASE IN
FOR THE 4BB CELLS
Q3 FULL AVAILABILITY FOR 4BB CELLS
4. Introduction to 4 Bus bar cells
www.jinkosolar.com 4
- 4 BB- 3 BB
• 1% reduction on CtM losses
• Japanese 3BB cell patent circumvention
• Reduction of microcracks impact and soldering
stress
• Automatic soldering
Improvement
5. Introduction to 4 Bus bar cells
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- 4 BB- 3 BB
• Maximum collection area (shadow factor)
• Minimum electrical resistance
Compromise
Bus bar needed to reach an specific shadowing factor
Fixed fingers
6. Introduction to 4 Bus bar cells
www.jinkosolar.com 6
- 4 BB- 3 BBSeries resistance
7. Introduction to 4 Bus bar cells
www.jinkosolar.com 7
- 4 BB- 3 BBSeries resistance
IT MAINLY AFFECTS TO THE FILL FACTOR. Reducing the Rs we can improve the FF
and therefore the Pmpp
8. Introduction to 4 Bus bar cells
www.jinkosolar.com 8
- 4 BB- 3 BBSeries resistance
IT MAINLY AFFECTS TO THE FILL FACTOR
9. Introduction to 4 Bus bar cells
www.jinkosolar.com 9
- 4 BB- 3 BB3BB Vs 4BB
LESS SPACE
BETWEEN
BUSBARS
GRIDLINE
INTERCONNECTION
THINNER BUSBAR
10. Introduction to 4 Bus bar cells
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- 4 BB- 3 BB3BB Vs 4BB
SHORTER CURRENT
PATH LEADING TO
HIGHER POWER
OUTPUT
11. Introduction to 4 Bus bar cells
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- 4 BB- 3 BB3BB Vs 4BB
REDUCTION OF
CRACKS IMPACT
d D
12. Introduction to 4 Bus bar cells
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- 4 BB- 3 BB3BB Vs 4BB
LESS STRESS DUE TO THE SOLDERING MINIMISING THE POSSIBILITY OF CRACKS AND
LEADING TO HOTSPOT REDUCTION
