Method for Producing an Energy Supply Unit

A method for producing an energy supply unit having a housing and a stack, including a fuel-cell stack, battery stack or capacitor stack, arranged in the housing, the method comprising:

• providing the housing, including a first tie-rod plate, a second tie-rod plate, a first pressure-plate arrangement and a second pressure-plate arrangement, wherein each pressure-plate arrangement is fastened to each tie-rod plate,
• arranging the stack between the first and second tie-rod plates and between the first and second pressure-plate arrangements,
• applying a bracing force to the first and second pressure-plate arrangements for the purpose of bracing the stack, and
• fastening at least the first pressure-plate arrangement to both tie-rod plates while the bracing force is being maintained upon the first and second pressure-plate arrangements,
• wherein at least one of the first and second pressure-plate arrangements includes a tolerance compensation system, wherein the tolerance compensation system includes an end plate to be securely connected to the tie-rod plates, a contact-pressure plate arranged between the end plate and the stack, and a positioning arrangement,
• wherein a distance between the end plate and the contact-pressure plate is altered by the positioning arrangement,
• wherein the positioning arrangement includes a free space between the contact-pressure plate and the end plate, and wherein a hardenable material is injected into the free space.