Cooling-line system of a modular construction, in particular for batteries of electric vehicles

1 . A cooling-line system ( 10 ) of modular construction, comprising:

at least one tubular connecting element ( 11 ) formed of a first metal;

at least two tubular or hose-shaped line elements ( 15 , 16 ) formed of a second metal, said line elements ( 15 , 16 ) are connected or are connectable by the connecting element ( 11 ), or at least one of said line elements ( 15 , 16 ) is connectable by the connecting element ( 11 ) to a function module to be cooled; and

an additional clip element ( 27 ) having a U-shaped main body ( 27 a ) by which the additional clip element is pushable onto the connecting element ( 11 ) or onto one of the line elements ( 15 , 16 ) or the line element ( 15 , 16 ), the clip element ( 27 ) has at least one retaining bracket ( 27 b ) integrally formed on the main body ( 27 a ), said retaining bracket ( 27 b ) is pivotable in relation to the main body ( 27 a ) behind a respective radial widening ( 12 ) on an other of the connecting element ( 11 ) and the line element ( 15 ) in a pull-out direction to fix the respective line element ( 15 ) in a form-fitting manner to the connecting element ( 11 ).

2 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein the connecting element ( 11 ) has a first connection end ( 12 ) and a second connection end ( 13 ), said connection ends ( 12 , 13 ) are configured for connection to in each case one of the line elements ( 15 , 16 ) or to the line element ( 15 , 16 ).

3 . The cooling-line system ( 10 ) as claimed in claim 2 , wherein the connecting element ( 11 ) has at least one branch ( 14 , 14 ′) between the connection ends ( 12 , 13 ), and a further line element composed of a metal is connected or is connectable to said at least one branch.

4 . The cooling-line system ( 10 ) as claimed in claim 3 , wherein the branch ( 14 , 14 ′) is formed as a neck or punched-out formation.

5 . The cooling-line system ( 10 ) as claimed in claim 4 , further comprising a connection part ( 19 ) for the further line element arranged on the branch ( 14 ), and the connection part ( 19 ) is of a same type as the first connection end ( 12 ) or the second connection end ( 13 ).

6 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein the connecting element ( 11 ) is widened at least at one of the connection ends ( 12 , 13 ), and at least one of the line elements ( 15 , 16 ) or the line element ( 15 , 16 ) is pushed or pressed into the widened connection end ( 12 , 13 ).

7 . The cooling-line system ( 10 ) as claimed in claim 6 , wherein the at least one of the line elements ( 15 , 16 ) or the line element ( 15 , 16 ) is fixed or is fixable in a materially bonded manner in the widened connection end ( 12 , 13 ).

8 . The cooling-line system ( 10 ) as claimed in claim 1 , further comprising a sealing element ( 18 ) located at least at one of the connection ends ( 12 , 13 ), that is arranged between the connecting element ( 11 ) and at least one of the line elements ( 15 , 16 ) or the line element ( 15 , 16 ).

9 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein at least one of the line elements ( 15 , 16 ) or the line element ( 15 , 16 ) comprises a corrugated-hose portion ( 23 ).

10 . The cooling-line system ( 10 ) as claimed in claim 9 , further comprising a sealing element ( 18 ) located at least at one of the connection ends ( 12 , 13 ), that is arranged between the connecting element ( 11 ) and at least one of the line elements ( 15 , 16 ) or the line element ( 15 , 16 ), and said sealing element ( 18 ) is arranged between two corrugations ( 16 a , 16 b ) in the corrugated-hose portion ( 23 ).

11 . The cooling-line system ( 10 ) as claimed in claim 9 , wherein, at least at one of the connection ends, the connecting element ( 11 ) is slotted over a sub-region of a circumference thereof and has a corresponding slot or cutout ( 22 ), and at least one fixing element ( 17 ) is pushed into the slot and over a part of the circumference of the line element between two corrugations ( 16 a , 16 b ) in the corrugated-hose portion ( 23 ) in order to fix the respective line element ( 16 ) to the connecting element ( 11 ) in a form-fitting manner.

12 . The cooling-line system ( 10 ) as claimed in claim 11 , further comprising an additional clamp element ( 28 ) configured to engage over the connecting element ( 11 ) and the at least one of the line elements ( 15 , 16 ) or the line element ( 15 , 16 ) at the at least one connection end ( 12 , 13 ) in a region of a sealing element ( 18 ), of a corrugation ( 15 a ) of the line element ( 15 ) and of an end widening ( 12 ) of the connecting element ( 11 ) from the outside in a form-fitting manner.

13 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein the first and the second connection ends ( 12 , 13 ) have different configurations.

14 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein the connecting element ( 11 ) is formed of aluminum and the line element(s) ( 15 , 16 ) are formed of high-grade steel.

15 . The cooling-line system ( 10 ) as claimed in claim 3 , wherein the at least one branch includes a plurality of branches ( 14 , 14 ′) located at different circumferential positions.

16 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein the connecting element ( 11 ) is straight.

17 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein the connecting element ( 11 ) is bent.

18 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein the connecting element ( 11 ) has a standardized standard connection on one side.

19 . The cooling-line system ( 10 ) as claimed in claim 1 , wherein multiple ones of the connecting elements ( 11 ) are arranged adjacently, and in which at least one spacer ( 29 , 29 ′) is arranged between at least two of the connecting elements ( 11 ).