An electrolysis device, - wherein the electrolysis device comprises a first and a second electrolysis unit , - wherein the first and the second electrolysis unit each comprise a first and a second end plate , - wherein the first and the second electrolysis unit each include a respective intermediate plate arranged approximately or exactly in the middle between the respective first and the respective second end plate , - wherein the first and the second electrolysis unit each include a stack of electrolysis cells between the respective intermediate plate and each of the two respective end plates , - wherein the electrolysis cells of the respective stack are each electrically connected in series, - wherein the electrolysis cells each include a first electrode and a second electrode at which an electrolysis liquid is partially electrolytically split, so that the remaining electrolysis liquid is admixed after the electrolytic splitting with a first electrolysis gas in the area of the respective first electrode and with a second electrolysis gas in the area of the respective second electrode , - wherein the first end plate of the first electrolysis unit and the first end plate of the second electrolysis unit are electrically connected to one another, - wherein the second end plate of the first electrolysis unit and the second end plate of the second electrolysis unit are electrically connected to one another, - wherein the electrolysis device includes a rectifier unit , which provides a first potential (P1) via a first output and provides a second potential (P2) via a second output , and - wherein the first output of the rectifier unit is electrically connected to a terminal of the intermediate plate of the first electrolysis unit and the second output of the rectifier unit is electrically connected to a terminal of the intermediate plate of the second electrolysis unit . - wherein the electrolysis device comprises a first and a second electrolysis unit , - wherein the first and the second electrolysis unit each comprise a first and a second end plate , - wherein the first and the second electrolysis unit each include a respective intermediate plate arranged approximately or exactly in the middle between the respective first and the respective second end plate , - wherein the first and the second electrolysis unit each include a stack of electrolysis cells between the respective intermediate plate and each of the two respective end plates , - wherein the electrolysis cells of the respective stack are each electrically connected in series, - wherein the electrolysis cells each include a first electrode and a second electrode at which an electrolysis liquid is partially electrolytically split, so that the remaining electrolysis liquid is admixed after the electrolytic splitting with a first electrolysis gas in the area of the respective first electrode and with a second electrolysis gas in the area of the respective second electrode , - wherein the first end plate of the first electrolysis unit and the first end plate of the second electrolysis unit are electrically connected to one another, - wherein the second end plate of the first electrolysis unit and the second end plate of the second electrolysis unit are electrically connected to one another, - wherein the electrolysis device includes a rectifier unit , which provides a first potential (P1) via a first output and provides a second potential (P2) via a second output , and - wherein the first output of the rectifier unit is electrically connected to a terminal of the intermediate plate of the first electrolysis unit and the second output of the rectifier unit is electrically connected to a terminal of the intermediate plate of the second electrolysis unit . <EOS>