Sofc cooling system, fuel cell and hybrid vehicle

Patent metadata

Field	Value
Publication number	US-2022407091-A1
Application number	US-202017764614-A
Country	US
Kind code	A1
Filing date	Sep 30, 2020
Priority date	Sep 30, 2019
Publication date	Dec 22, 2022
Grant date	—

Abstract

The invention provides an SOFC cooling system. For the feature that not all components work in the full operation process of an SOFC, a DC step-down transformer DCDC, a fan and a condenser are connected in parallel, and a solenoid valve is installed in each parallel pipeline for controlling on/off of each pipeline according to a corresponding signal. Compared with the traditional SOFC cooling system, the constant-flow serial cooling system will reduce pressure losses and the power of a water pump; a solenoid valve is installed in each parallel pipeline for controlling on/off of each branch according to a corresponding signal; considering the cooling requirements of SOFC during start-up, power generation and shutdown, all components are cooled in parallel through reasonable design of each parallel pipeline, consequently to improve the cooling effect and reduce the energy consumption; the invention also discloses a fuel cell and hybrid vehicle.

First claim

1 . An SOFC cooling system, comprising:
a radiator, a water tank, a water pump, a DC step-down transformer, a fan, a condenser, a current sensor, a first flowmeter, and a second flowmeter, wherein:
the DC step-down transformer, the fan, and the condenser are connected in parallel, and a solenoid valve group is installed in each parallel supply for controlling switching on and off of each supply according to a corresponding signal, to constitute a parallel system;
the current sensor is provided in a circuit of the DC step-down transformer for detecting a current signal of the DC step-down transformer;
the first flowmeter is provided in a supply of the fan for detecting a flow signal;
the second flowmeter is provided in an anode exhaust gas outlet of the condenser for detecting a flow signal of anode exhaust gas;
a first end of the radiator is connected with a first end of the water pump and the water tank, respectively;
a second end of the water pump is connected with a first end of the parallel system; and
a second end of the radiator is connected with a second end of the parallel system.

2 . The SOFC cooling system according to claim 1 , wherein the solenoid valve group is a proportional valve group, and the opening degree of the proportional valve installed in each supply is controllable according to the corresponding signal, so as to regulate back pressures of different supplies.

3 . The SOFC cooling system according to claim 1 , further comprising a temperature sensor in a pipeline between the radiator and the water pump for detecting the temperature of a coolant in the pipeline.

4 . The SOFC cooling system according to claim 1 , wherein
the radiator comprises an adjustable speed cooling fan.

5 . The SOFC cooling system according to claim 1 , wherein the water pump is an adjustable flow water pump.

6 . A fuel cell, comprising the SOFC cooling system of claim 1 .

7 . A hybrid vehicle, comprising the fuel cell of claim 6 .

Assignees

• Ceres Ip Co Ltd

Inventors

• Jiang Longkai
• Chen Youpeng
• Song Weilong
• Du Yaxin
• Cao Meng

Classifications

• H01M8/04029 Primary

  Heat exchange using liquids · CPC title

• H01M8/04358

  of the coolant · CPC title

• H01M8/043

  applied during specific periods · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M8/04589

  of fuel cell stacks · CPC title