ELECTRICAL CONNECTION, ELECTRICAL MACHINE SYSTEM COMPRISING SUCH AN ELECTRICAL CONNECTION AND METHOD FOR FIXING BUSBARS TO A SUPPORT
An electrical connection includes several busbars designed for connecting an inverter to an electrical machine, each busbar having two fixation holes. A support designed for supporting the busbars includes grooves designed for respectively receiving the busbars, and for each groove, two fixation pins projecting from a bottom of the groove, designed for being respectively received in the fixation holes of the busbar received in the groove and for being riveted to fix the busbars to the support. Each fixation hole is larger than the fixation pin received.
1 . Electrical connection comprising:
several busbars designed for connecting an inverter to an electrical machine, each busbar having two fixation holes;
a support designed for supporting the busbars, the support comprising:
grooves designed for respectively receiving the busbars, and
for each groove, two fixation pins projecting from a bottom of the groove, designed for being respectively received in the fixation holes of the busbar received in the groove and for being riveted to fix the busbars to the support;
wherein each fixation hole is larger than the fixation pin received.
2 . Electrical connection according to claim 1 , wherein the fixation hole has a periphery extending at least 0.5 mm from the fixation pin, all along the periphery.
3 . Electrical connection according to claim 1 , wherein the periphery of each fixation hole extends at most 1.5 mm from the fixation pin, and preferably at most 1 mm from the fixation pin, all along the periphery.
4 . Electrical connection according to claim 1 , wherein the support comprises two flexible tabs from which the fixation pins respectively projects.
5 . Electrical connection according to claim 3 , wherein each tab extends parallel to the bottom of the groove.
6 . Electrical connection according to claim 4 , wherein each tab is cut into the bottom of the groove.
7 . Electrical connection according to claim 4 , wherein the fixation pin projects perpendicular to the tab.
8 . Electrical connection according to claim 4 , wherein the tabs are made of plastic.
9 . Electrical connection according to claim 1 , wherein the support is made of plastic.
10 . Electrical connection according to claim 1 , wherein, for each busbar, at least one of the fixation holes, for example both, are circular or oblong, with a first dimension at least 20% longer than a second dimension perpendicular to the first dimension.
11 . Electrical connection according to claim 1 , wherein the support comprises at least one positioning pin for positioning the support with respect to a housing of the electrical machine.
12 . Electrical machine system comprising:
an electrical machine having several phases;
an inverter; and
an electrical connection according to claim 1 .
13 . Electrical connection according to claim 2 , wherein the periphery of each fixation hole extends at most 1.5 mm from the fixation pin, and preferably at most 1 mm from the fixation pin, all along the periphery.
14 . Electrical connection according to claim 2 , wherein the support comprises two flexible tabs from which the fixation pins respectively projects.
15 . Electrical connection according to claim 5 , wherein each tab is cut into the bottom of the groove.
16 . Electrical connection according to claim 5 , wherein the fixation pin projects perpendicular to the tab.
17 . Electrical connection according to claim 5 , wherein the tabs are made of plastic.
18 . Electrical connection according to claim 2 , wherein the support is made of plastic.
19 . Electrical connection according to claim 2 , wherein, for each busbar, at least one of the fixation holes, for example both, are circular or oblong, with a first dimension at least 20% longer than a second dimension perpendicular to the first dimension.
20 . Electrical connection according to claim 2 , wherein the support comprises at least one positioning pin for positioning the support with respect to a housing of the electrical machine.