Power supply unit for a utility vehicle and method for operating a power supply unit for a utility vehicle

A utility vehicle, comprising:

• a power supply unit for a utility vehicle, including:
• an electrical energy store;
• a generator;
• an interface to at least one electrical load of the utility vehicle;
• a power line unit to connect the energy store and the generator to the interface, wherein the power line unit includes a switching element for electrically isolating the generator from the interface;
• and
• a sensor unit to detect a fault in the electrical energy store and/or in at least one line of the power line unit and/or in the generator and to respond to the detected fault by actuating the switching element to isolate the generator from the interface, wherein the electrical energy store remains electrically connected to the interface;
• wherein at least two loads are coupled to the interface and/or, as one load, a steering transmission motor is coupled to the interface as load, and
• wherein the utility vehicle has two steerable axles, a deflection of which is caused in each case by a steering transmission motor, wherein a steering transmission motor of a first of the steerable axles is supplied with electrical energy by the generator when the switch is open, and a steering transmission motor of the second of the steerable axles is electrically coupled to the electrical energy store.

A method for operating a power supply unit of a utility vehicle, the method comprising:

• detecting a fault in an electrical energy store, in a generator and/or in at least one line of a power line unit, wherein the power supply unit includes:
• the electrical energy store;
• the generator;
• the interface to at least one electrical load of the utility vehicle;
• the power line unit to connect the energy store and the generator to the interface, wherein a power line unit includes a switching element for electrically isolating the generator from the interface;
• and
• a sensor unit to detect a fault in the electrical energy store and/or in the at least one line of the power line unit and/or in the generator and to respond to the detected fault by actuating the switching element in response to the detected fault to isolate the generator from the interface, wherein the electrical energy store remains electrically connected to the interface;
• wherein the utility vehicle has two steerable axles, a deflection of which is caused in each case by a steering transmission motor, wherein a steering transmission motor of a first of the steerable axles is supplied with electrical energy by the generator when the switch is open, and a steering transmission motor of the second of the steerable axles is electrically coupled to the electrical energy store.

A control unit for operating a power supply unit of a utility vehicle, comprising:

• a controller configured to perform the following:
• detecting a fault in an electrical energy store, in a generator and/or in at least one line of a power line unit, wherein the power supply unit includes:
• the electrical energy store;
• the generator;
• the interface to at least one electrical load of the utility vehicle;
• the power line unit to connect the energy store and the generator to the interface, wherein the power line unit includes a switching element for electrically isolating the generator from the interface;
• and
• a sensor unit to detect the fault in the electrical energy store and/or in the at least one line of the power line unit and/or in the generator and to respond to the detected fault by actuating the switching element in response to the detected fault to isolate the generator from the interface, wherein the electrical energy store remains electrically connected to the interface;
• wherein the utility vehicle has two steerable axles, a deflection of which is caused in each case by a steering transmission motor, wherein a steering transmission motor of a first of the steerable axles is supplied with electrical energy by the generator when the switch is open, and a steering transmission motor of the second of the steerable axles is electrically coupled to the electrical energy store.

A non-transitory computer readable medium having a computer program, which is executable by a processor, comprising:

• a program code arrangement having program code for operating a power supply unit of a utility vehicle, by performing the following:
• detecting a fault in an electrical energy store, in a generator and/or in at least one line of a power line unit, wherein the power supply unit includes:
• the electrical energy store;
• the generator;
• the interface to at least one electrical load of the utility vehicle;
• the power line unit to connect the energy store and the generator to the interface, wherein the power line unit includes a switching element for electrically isolating the generator from the interface;
• and
• a sensor unit to detect a fault in the electrical energy store and/or in the at least one line of the power line unit and/or in the generator and to respond to the detected fault by actuating the switching element in response to the detected fault to isolate the generator from the interface, wherein the electrical energy store remains electrically connected to the interface;
• wherein the utility vehicle has two steerable axles, a deflection of which is caused in each case by a steering transmission motor, wherein a steering transmission motor of a first of the steerable axles is supplied with electrical energy by the generator when the switch is open, and a steering transmission motor of the second of the steerable axles is electrically coupled to the electrical energy store.