Patent ID: 8603700
Filing Date: 2013-12-10
Classification: H01M,Y02E

Abstract:
1. A fuel cell system including a fuel cell body that generates electricity through electrochemical reaction of a first reactive gas and a second reactive gas, a first gas supply passage and a second gas supply passage supplying the first reactive gas and the second reactive gas to the fuel cell body, a first gas discharge passage and a second gas discharge passage discharging an off-gas of the first reactive gas and an off-gas of the second reactive gas from the fuel cell body, the fuel cell system further comprising: a branch passage branching out from one of the first gas discharge passage or the second gas discharge passage, wherein the off gas discharged by the other one of the first gas discharge passage or the second gas discharge passage is arranged to flow through the branch passage so as to heat the branch passage to a temperature sufficient to prevent any liquids contained in the branch passage from freezing; a bypass passage that conveys the off-gas of the other one of the gas discharge passages to the branch passage; and an adjusting unit configured to introduce the off-gas of the other one of the discharge passages into the bypass passage, wherein the adjusting unit is arranged at a junction point of the other one of the discharge passages and the bypass passage, and is configured to adjust the amount of the off-gas flowing through the bypass passage relative to the amount of the off-gas remaining in the other one of the discharge passages and to cause the off-gas to flow through both the bypass passage and a portion of the other one of the discharge passage downstream of the adjusting unit in a gas state.