Abstract: A coupling device for a fluid cooling system may have a first coupling unit having a first housing, which has a first sub-housing and a second sub-housing connectable to the first sub-housing. The first sub-housing may have a first axial passage opening connectable to a first fluid line, a first signal interface and a first end face. The second sub-housing may have a second axial passage opening connectable to a second fluid line, a second signal interface and a second end face. The first sub-housing and the second sub-housing are axially connectable to one another and the passage openings are fluidically connected to one another and the signal interfaces are connected to one another. The two sub-housings may be laterally connectable to one another, so that in the laterally coupled state, the two sub-housings are arranged parallel next to one another.

Abstract: A coupling device for a fluid cooling system may have a first coupling unit having a first housing, which has a first sub-housing and a second sub-housing connectable to the first sub-housing. The first sub-housing may have a first axial passage opening connectable to a first fluid line, a first signal interface and a first end face. The second sub-housing may have a second axial passage opening connectable to a second fluid line, a second signal interface and a second end face. The first sub-housing and the second sub-housing are axially connectable to one another and the passage openings are fluidically connected to one another and the signal interfaces are connected to one another. The two sub-housings may be laterally connectable to one another, so that in the laterally coupled state, the two sub-housings are arranged parallel next to one another.

Abstract: A first module for a fluid cooling system may have a control unit, a first communication unit, a pump for a cooling fluid, and a first heat exchanger. The first communication unit may be configured to receive signals from at least one second module, the signals having an identification feature of the second module. The control unit, on the basis of the identification feature, is designed for identifying the second module, checking whether the second module is system-compatible or authorized, and switching on the pump and/or the first heat exchanger depending on the presence of the system-compatible or authorized second module. A cooling fluid system may have the first module and a second module.