Electrical power distributor for an electric or hybrid vehicle
A high-voltage power distributor is configured to keep the need for high-voltage supply lines as low as possible for an electric or hybrid vehicle having an electric-motor driving motor. The high-voltage power distributor has a distributor housing formed with a connection space. At least one incoming supply line and two outgoing supply lines, which are connected to each other, are introduced into the connection space. The distributor housing has a two-part construction, with an electrically conductive inner housing and an insulating outer housing. Each respective shield of a respective supply line is connected to the inner housing in an electrically conductive manner. Thus, a mechanically robust design is enabled together with good EMC shielding in the connection region of the supply lines, and furthermore reliable sealing with respect to the environment is enabled.
1. An electric power distributor for an electric or hybrid vehicle with an electric motor drive system, the power distributor comprising:
a distributor housing having an inner housing made from two shells of an electrically conductive material enclosing a connection space and an outer housing of an electrically insulating material encasing said inner housing in a shell form;
a plurality of supply lines including at least one incoming supply line and at least two outgoing supply lines connected in said connection space to said incoming supply line, said supply lines entering said connection space through a housing feed-through socket;
said supply lines having a shielding connected electrically conductively with said inner housing;
a shielding sleeve subassembly electrically connected to said inner housing and making electrical contact with said shielding, said shielding sleeve subassembly having an underlying sleeve and a clamping element fashioned as a sleeve, and wherein said shielding is clamped between said underlying sleeve and said clamping element;
said inner housing having in each case a connecting piece to form the respective said housing feed-through socket in which said shielding sleeve subassembly is clamped, and wherein said shielding sleeve subassembly is fixed in an axial direction in the respective said housing feed-through socket, with at least one of said underlying sleeve and said clamping element being radially widened at both ends to form a form fit with said inner housing acting in both axial directions.
2. The power distributor according to claim 1 , wherein said inner housing is a sheet metal housing.
3. The power distributor according to claim 1 , wherein, except for said housing feed-through sockets, said inner housing is completely closed.
4. The power distributor according to claim 1 , wherein said outer housing is formed by overmolding said inner housing.
5. The power distributor according to claim 1 , wherein said outer housing comprises two separate half shells.
6. The power distributor according to claim 1 , wherein said outer housing and said inner housing each consist of two half shells having an encircling edge, and the encircling edge of said inner housing lies between said half shells of said outer housing.
7. The power distributor according to claim 1 , which comprises a sealing element inserted in a sealing sleeve, wherein a respective supply line is led through the respective said housing feed-through socket by way of said sealing element.
8. The power distributor according to claim 7 , wherein said sealing sleeve is a pot-shaped sleeve.
9. The power distributor according to claim 7 , wherein said shielding sleeve subassembly is formed with a radial web enclosing said sealing element in a direction of a sleeve bottom of said sealing sleeve.
10. The power distributor according to claim 9 , wherein said sealing element is pressed in between the sleeve bottom and said radial web.
11. The power distributor according to claim 10 , wherein said underlying sleeve comprises a radial web and a sleeve shaft, and said sleeve shaft is inserted between a jacket of said supply line and said clamping element.
12. The power distributor according to claim 10 , wherein said clamping element has a broadened edge at both ends thereof, and the respective said housing feed-through socket in the shape of a connecting piece lies between said broadened edges.
13. The power distributor according to claim 1 , wherein said shielding sleeve subassembly is clamped in the respective said housing feed-through socket.
14. The power distributor according to claim 1 , wherein said sleeve of said clamping element is a crimp sleeve.
15. The power distributor according to claim 1 , which comprises an insulating element inserted in said connection space, in which said at least one incoming supply line is connected to said at least two outgoing supply lines.
16. The power distributor according to claim 15 , wherein said insulating element is a multiple-piece element.
17. The power distributor according to claim 15 , wherein said insulating element is a separate molded element with a complementary shape to at least a part of said inner housing, so that said insulating element is fixed with a form fit in said inner housing.