| 摘要 |
This cooling device comprises a resin water passage having sealed therein an ion-exchange resin which can remove impurity ions in coolant that cools a layer-built cell. Coolant is made to pass through ion-exchange resin in said resin water passage. The cooling device includes: a bypass passage which branches off from the resin water passage and which bypasses the ion-exchange resin; and an opening and closing means which closes the bypass passage according to the conducting state of the coolant. |
