US-20260128338-A1 - A METHOD OF OPERATING A CELL SYSTEM HAVING AT LEAST ONE ELECTROCHEMICAL CELL, A CELL SYSTEM, AND A COMPUTER PROGRAM

Abstract

The invention proceeds from a method of operating a cell system ( 22 ) having at least one electrochemical cell ( 24 ). It is proposed that at least one operational parameter of a temperature control unit ( 30 ) of the cell system ( 22 ) is set depending on at least one internal temperature parameter of the cell system ( 22 ).

Inventors

• Sebastian Egger
• Alexander Konstandin
• Felix Eberhard Hildebrand
• Ingo KERKAMM
• Markus Klinsmann
• Maxime Carre
• Sebastian Schmaderer

Assignees

• ROBERT BOSCH GMBH

Dates

Publication Date

20260507

Application Date

20230628

Priority Date

20220704

Claims (14)

1. 1 . A method for operating a cell system ( 22 ) with at least one electrochemical cell ( 24 ), wherein at least one operational parameter of a temperature control unit ( 30 ) of the cell system ( 22 ) is set as a function of at least one internal temperature parameter of the cell system ( 22 ).
2. 2 . The method of claim 1 , wherein the internal temperature parameter is determined based on a physical model of the cell system ( 22 ).
3. 3 . The method of claim 2 , wherein the internal temperature parameter is determined on the basis of the physical model of the cell system ( 22 ) as a function of the operational parameter of the cell system ( 22 ).
4. 4 . The method of claim 3 , wherein the operational parameters comprise at least one input parameter of the cell system ( 22 ).
5. 5 . The method of claim 4 , wherein the input parameter comprises at least one operational parameter of the cell system ( 22 ).
6. 6 . The method of claim 3 , wherein the operational parameters comprise at least one output parameter of the cell system ( 22 ).
7. 7 . The method of claim 6 , wherein the output parameter comprises at least one performance parameter of the cell system ( 22 ).
8. 8 . A method according to claim 1 , wherein the physical model is inverted and optimized to determine the internal temperature parameter.
9. 9 . A method according to claim 1 , wherein the physical model is used to train a regression model.
10. 10 . A method according to claim 1 , wherein the internal temperature parameter is determined in a spatially resolved manner.
11. 11 . A method according to claim 1 , wherein an expected behavior of the internal temperature parameter is predicted based on the physical model.
12. 12 . The method of claim 11 , wherein the at least one operational parameter of the temperature control unit ( 30 ) is adjusted as a function of the expected behavior of the internal temperature parameter.
13. 13 . A cell system ( 22 ) having at least one electrochemical cell ( 24 ) and having at least one control unit ( 26 ) for performing a method according to claim 1 .
14. 14 . A non-transitory, computer-readable medium comprising instructions which, when executed by a computer, prompt the latter to perform the method according to claim 1 .

Description

BACKGROUND Methods for operating a cell system having at least one electrochemical cell have already been proposed. SUMMARY The invention proceeds from a method of operating a cell system having at least one electrochemical cell. It is proposed that at least one operational parameter of a temperature control unit of the cell system is set depending on at least one internal temperature parameter of the cell system. By the embodiment of the method according to the invention for operating the cell system, an operation of the cell system outside of a provided temperature range can be counteracted particularly precisely and efficiently. Advantageously, the cell system can be operated particularly carefully. Advantageously, temperature-related damage to the cell system can be counteracted particularly efficiently and precisely. Advantageously, a particularly efficient and at the same time safe operation of the cell system can be enabled. Advantageously, a particularly durable cell system can be provided. Advantageously, the cell system can be controlled in a particularly dynamic manner. The electrochemical cell is preferably formed as a solid oxide fuel cell. Alternatively, however, it is also contemplated that the electrochemical cell may be formed as another fuel cell, for example a polymer electrolyte membrane fuel cell or the like, as an electrolytic cell or as an accumulator cell. For example, alternatively, it is also contemplated that the electrochemical cell is used in an electrolyzer. It is contemplated that the cell system comprises only one, in particular the electrochemical cell already mentioned above, or that the cell system comprises a plurality of electrochemical cells, for example two, three or several hundred electrochemical cells. Preferably, the electrochemical cells of the cell system comprising a plurality of electrochemical cells are aggregated into a stack and in particular connected in series. It is also contemplated that the cell system comprises a plurality of stacks formed from a plurality of electrochemical cells, preferably aggregated to form a module or tower. The cell system preferably comprises a control unit. The control unit is in particular provided to perform the method to operate the cell system. The term “provided” is preferably intended to mean specifically designed, specifically configured, and/or specifically equipped. An object being provided or designed for a specific function is understood to mean that the object fulfills and/or performs this specific function in at least one application and/or operating state. In particular, the control unit comprises at least one processor and one memory element, as well as an operating program stored on the memory element. The memory element is preferably designed as a digital storage medium, e.g., a hard disk or the like. In particular, the cell system comprises a housing in which preferably the at least one electrochemical cell or stack formed by a plurality of electrochemical cells is disposed. It is contemplated that the control unit is disposed at least partially on, in particular at least partially in, the housing. Alternatively or additionally, it is also contemplated that the cell system comprises an external unit, wherein the external unit comprises at least a part of the control unit. For example, the external unit may be a cloud, a server, or the like. It is contemplated that the external unit comprises the memory element of the control unit. The temperature control unit preferably comprises at least one blower unit. The temperature control unit, preferably the blower unit, is provided in particular to generate an air flow rate, preferably on a cathode side of the cell system. The oxygen ions required for an electrochemical reaction of the cell system, which preferably comprises fuel cells, are provided by means of the blower unit, preferably by means of the air flow rate generated by the blower unit. The cell system, in particular the at least one electrochemical cell or the stack formed by a plurality of electrochemical cells, is preferably temperature controlled by means of the temperature control unit. The cell system, in particular the at least one electrochemical cell or the stack formed by a plurality of electrochemical cells, is in particular cooled or heated by means of the temperature control unit. Preferably, the blower unit is provided for generating an air flow rate for cooling the cell system, in particular the at least one electrochemical cell or stack formed by a plurality of electrochemical cells. Alternatively or additionally, it is conceivable that the blower unit is provided to generate an air flow rate, preferably pre-heated, for heating the cell system, in particular the at least one electrochemical cell or the stack formed by a plurality of electrochemical cells. It is contemplated that the blower unit may comprise one fan or multiple fans. Alternatively or additionally, it is conceivable that the t