Control device for a fuel cells stack
AssigneeRobert Bosch GmbH
InventorAntonius Bader
Life of this patent
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Abstract
The invention relates to a control device (10) for a fuel cell stack (14), the control device being set up to actuate the fuel cell stack (14) using a predetermined current (IV) and to measure the resulting voltage (U) and to compare this with a reference voltage (UR). The predetermined current (IV) depends on the reference voltage (UR) by means of a sum of at least two exponential functions whose argument in each case contains the reference voltage (UR). The control device (10) is designed to ascertain the reference voltage (UR) by approximately reversing the correlation between the predetermined current and the reference voltage (UR) using an iterative approximation algorithm.
Claims14
A fuel cell stack comprising:
- a control device being configured to actuate the fuel cell stack in accordance with a desired predetermined current (IV), to measure a resulting voltage (U), and to compare the resulting voltage (U) with a reference voltage (UR), the predeteiztiined current (IV) being dependent on the reference voltage (UR) via a sum of at least two exponential functions whose argument in each case contains the reference voltage (UR), and
- the control device being configured to ascertain the reference voltage (UR) by approximately reversing a correlation between the predetermined current (IV) and the reference voltage (UR) using an iterative approximation algorithm.
A control device
- configured:
- to actuate a fuel cell stack in accordance with a desired predetermined current (IV), to measure the resulting voltage (U), and to compare the resulting voltage (U) with a reference voltage (UR), the predetermined current (IV) being dependent on the reference voltage (UR) via a sum of at least two exponential functions whose argument in each case contains the reference voltage (UR), and
- to ascertain the reference voltage (UR) by approximately reversing a correlation between the predetermined current (IV) and the reference voltage (UR) using an iterative approximation algorithm,
- the control device being a fuel cell control device.
Dependencies are inferred from the claim text.