The connection method between the solar cell and the circuit board has been changed, from direct solder connection on the circuit board to a flexible wire connection. This prevents the solder joints from detaching after being stressed
The way solar cells and circuit boards are connected has changed from a direct solder connection to a soft wire connection. This prevents the solder point from disengaged after pressure
The connection between solar cells and circuit boards has changed from direct soldering to flexible wire connection. In this way, the solder joint can not be separated under pressure<br>