Tank system for a motor vehicle, method for operating a tank system, motor vehicle, computer program product, and computer-readable medium

A tank system (100) for a motor vehicle, the tank system (100) comprising:

• a primary tank device (10),
• a secondary tank device (20),
• a primary filling path (31), which is adapted to supply fluid to the primary tank device (10),
• a secondary filling path (32), which is adapted to supply fluid to the secondary tank device (20), and
• a main filling path (33) for supplying the fluid into the tank system (100),
• a main distributor (30) connected to the primary filling path (31), the secondary filling path (32) and the main filling path (33) and a tank path (34) for supplying the fluid from the primary tank device (10) and/or from the secondary tank device (20) to a fuel system of the motor vehicle,
• wherein the primary tank device (10) has a primary tank (12, 12′) and the secondary tank device (20) has a secondary tank (22),
• wherein the primary tank (12, 12′) of the primary tank device (10) has a smaller tank volume than the secondary tank (22) of the secondary tank device (20),
• wherein the primary filling path (31) has a throttle (35) and a first non-return valve (36) connected in parallel to each other in the primary filling path (31),
• wherein the first non-return valve (36) is adapted to at least partially equalize a fluid pressure in the primary tank device (10) with the fluid pressure in the secondary tank device (20) in the event of a fault in the secondary tank device (20) and/or in the secondary filling path (32).