Temperature control system for a high-temperature battery or a high-temperature electrolyzer

Patent metadata

Field	Value
Publication number	US-9537189-B2
Application number	US-201314406208-A
Country	US
Kind code	B2
Filing date	May 14, 2013
Priority date	Jun 11, 2012
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A control system for controlling the temperature in a high-temperature battery to which hot air is supplied via an air duct system or in a high-temperature electrolyzer to which hot air is supplied via an air duct system is provided. The control system includes at least two temperature probes designed to detect the temperature at two different points in the air duct system, at least one first air-conditioning unit for physically conditioning the air, mounted in the air duct system upstream of the high-temperature battery or high-temperature electrolyzer, and a recirculation duct which recirculates hot air discharged from the high-temperature battery or high-temperature electrolyzer to a point in the air duct system upstream of the high-temperature battery or high-temperature electrolyzer and feeds the hot air back into the air duct system. The control system controls the first air-conditioning unit in accordance with the temperatures detected by the temperature probes.

First claim

The invention claimed is:

1. A control system for temperature control of a high-temperature battery which is supplied with hot air via an air piping system or of a high-temperature electrolyzer which is supplied with hot air via an air piping system, comprising:
at least two temperature probes, wherein said temperature probes are designed for detecting the temperature at two different points of the air piping system, and also
at least one first conditioning unit, for a physical conditioning of the air, which is connected into the air piping system upstream with regard to the high-temperature battery or to the high-temperature electrolyzer, wherein the conditioning unit is designed as a heating device which is suitable for supplying heat to the air which is present in the air piping system, and also
a feedback pipe, wherein said feedback pipe feeds back hot air discharged from the high-temperature battery or from the high-temperature electrolyzer to a point of the air piping system and feeds the hot air into this again, which point is arranged upstream with regard to the high-temperature battery or to the high-temperature electrolyzer,
wherein the control system controls the first conditioning unit in dependence upon the temperatures which are detected by the temperature probes.

2. The control system as claimed in claim 1 ,
wherein the control system further comprises a second conditioning unit, connected into the feedback pipe, which is designed as a flow generator and is suitable for applying a flow to the hot air which is present in the feedback pipe,
wherein the control system also controls this second conditioning unit in dependence upon the temperatures which are detected by the temperature probes.

3. The control system as claimed in claim 1 , wherein a first temperature probe is provided in the air piping system at a first point upstream of the high-temperature battery or upstream of the high-temperature electrolyzer, and another, second temperature probe is provided in the air piping system at a second point downstream of the high-temperature battery or downstream of the high-temperature electrolyzer.

4. The control system as claimed in claim 1 , wherein a first temperature probe is provided in the air piping system at a first point upstream of the high-temperature battery or upstream of the high-temperature electrolyzer, and another, second temperature probe is provided in the high-temperature battery or in the high-temperature electrolyzer.

5. The control system as claimed in claim 1 ,
wherein provision is made for at least three temperature probes,
wherein a first temperature probe is provided in the air piping system at a first point upstream of the high-temperature battery or of the high-temperature electrolyzer, a second temperature probe is provided in the air piping system at a second point downstream of the high-temperature battery or downstream of the high-temperature electrolyzer, and a third temperature probe is provided in the high-temperature battery or in the high-temperature electrolyzer.

6. The control system as claimed in claim 1 ,
wherein the control system has at least two conditioning units which are connected into the air piping system upstream with regard to the high-temperature battery or to the high-temperature electrolyzer,
wherein a second conditioning unit of the at least two conditioning units is designed as a flow generator which is suitable for applying a flow to the air which is present in the air piping system,
wherein the control system controls the two conditioning units in dependence upon the temperature difference which is detected by the temperature probes.

7. The control system as claimed in claim 6 , wherein the two conditioning units are designed as one component.

8. The control system as claimed in claim 1 , wherein the control system further comprises a second feedback pipe which feeds back hot air discharged from the high-temperature battery or from the high-temperature electrolyzer to a point of the air piping system, which point is arranged upstream with regard to the high-temperature battery or to the high-temperature electrolyzer.

9. The control system as claimed in claim 8 , wherein the second feedback pipe conducts the hot air discharging from the high-temperature battery or from the high-temperature electrolyzer to a heat exchanger which is designed for heating the hot air in the air piping system before it is fed to the high-temperature battery or to the high-temperature electrolyzer.

10. The control system as claimed in claim 9 , wherein the heat exchanger is connected into the air piping system upstream with regard to first conditioning unit.

11. The control system as claimed in claim 7 , wherein the two conditioning units are designed as one component, and have a series connection in the component.

12. A control system for temperature control of a high-temperature battery which is supplied with hot air via an air piping system or of a high-temperature electrolyzer which is supplied with hot air via an air piping system, comprising
at least two temperature probes, wherein said temperature probes are designed for detecting the temperature at two different points of the air piping system, and also
a first conditioning unit for heating of air enroute to the high-temperature battery or to the high-temperature electrolyzer,
a feedback pipe, wherein said feedback pipe feeds back hot air discharged from the high-temperature battery or from the high-temperature electrolyzer to a point of the air piping system upstream with regard to the high-temperature battery or to the high-temperature electrolyzer, and
a heat exchanger from transferring heat from the hot air discharged from the high-temperature battery or from the high-temperature electrolyzer in the feedback pipe to the air enroute to the high-temperature battery or to the high-temperature electrolyzer,
wherein the control system controls the first conditioning unit in dependence upon the temperatures which are detected by the temperature probes.

13. A control system for temperature control of a high-temperature battery which is supplied with hot air or of a high-temperature electrolyzer which is supplied with hot air, comprising:
an air piping system that intakes fresh air at an inlet and that delivers the hot air to the high-temperature battery or the high-temperature electrolyzer, wherein the hot air comprises the fresh air;
at least two temperature probes, wherein said temperature probes are designed for detecting the temperature at two different points of the air piping system,
at least one first conditioning unit, for heating of air in the air piping system, which is connected into the air piping system upstream with regard to the high-temperature battery or to the high-temperature electrolyzer, and
a feedback pipe, wherein said feedback pipe feeds back hot air discharged from the high-temperature battery or from the high-temperature electrolyzer to a point of the air piping system and feeds the hot air into this again, which point is arranged upstream with regard to the high-temperature battery or to the high-temperature electrolyzer,
wherein the control system controls the first conditioning unit in dependence upon the temperatures which are detected by the temperature probes.

14. The control system as claimed in claim 13 , wherein the control system controls the feed of the hot air into point of the air piping system to adjust an oxygen content present in the air enroute to the high-temperature battery or the high-temperature electrolyzer.

Assignees

• Siemens Ag

Inventors

• Lenk Uwe
• Tremel Alexander

Classifications

• H01M8/04007

  related to heat exchange · CPC title

• C25B15/02

  Process control or regulation · CPC title

• H01M8/04335

  of cathode reactants at the inlet or inside the fuel cell · CPC title

• H01M8/04738

  of auxiliary devices, e.g. reformer, compressor, burner · CPC title

• H01M8/04708

  of fuel cell reactants · CPC title