| 摘要 |
A condition of not permitting an increased temperature value of a diode 13 to exceed the junction temperature is satisfied by a simple structure at a low cost. A plurality of countercurrent prevention diodes 13 between terminal board 12 to which electrodes a of solar cell modules M are connected are connected in parallel. When an output current I from the solar cell module M flows in a circuit of the plurality of diodes 13 connected in parallel, a current i flowing in each diode 13 is reduced by a factor of the number of diodes connected in parallel, for instance, when the three diodes are connected in parallel, the current becomes one third. When the value of the flowing current is reduced, a heating value is also reduced. A heat radiating piece 20 is provided on the terminal board 12 . In this way, the heat resistance reliability of the diode 13 can be maintained without using an expensive heat resistant diode, by sharing the load of the output current by the plurality of diodes 13 and efficiently radiating heat from the terminal board 12.
|
