Fuel cell system, method of controlling fuel cell system, and fuel cell system-mounted vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorRyosuke Oya
Life of this patent
Estimating the term…
Abstract
A fuel cell system FCS includes a fuel cell 10, a high voltage circuit 21 for driving an electromotor 42, and a relay 41 for electrically connecting or blocking the fuel cell 10 to or from the high voltage circuit 21. A control unit 50 obtains insulation decrease information in accordance with a request for starting the fuel cell, and performs, when a specified insulation decrease occurred region is not a fuel cell region SE1 including the fuel cell and the cooling circuit, conductivity reduction process on cooling liquid using a conductivity reduction unit 113 before having a relay 41 connect, and has the relay 41 connect after completing the conductivity reduction process.
Claims10
A method of controlling a fuel cell system with a fuel cell, comprising:
- receiving a request for starting the fuel cell;
- obtaining insulation decrease information specifying an insulation decrease occurred region in the fuel cell system;
- and
- performing, based on the insulation decrease information specifying that the insulation decrease occurred region is not a fuel cell region including the fuel cell and a cooling circuit with circulating cooling liquid, a conductivity reduction process on the cooling liquid before having a relay connect, the relay being arranged between a high voltage circuit for driving an electromotor and the fuel cell, and performing a start process including having the relay connect after completing the conductivity reduction process.
A method of controlling a fuel cell system with a fuel cell, comprising:
- receiving a request for starting the fuel cell;
- obtaining insulation decrease information specifying that an insulation decrease occurred region in the fuel cell system is either a fuel cell region including the fuel cell and a cooling circuit with circulating cooling liquid or a no fuel cell region;
- and
- performing, based on the insulation decrease information specifying that the specified insulation decrease occurred region is the no fuel cell region, a conductivity reduction process on the cooling liquid before having a relay connect, the relay being arranged between a high voltage circuit for driving an electromotor and the fuel cell, and performing a start process including having the relay connect after completing the conductivity reduction process.
Dependencies are inferred from the claim text.