Device for electrically connecting power distribution plates and electrical power distribution system provided with such a connection device

1. A device electrically connecting dual-polarity power distribution plates ( 13 , 14 ), comprising a connector ( 12 ) fastened to one end of a first dual-polarity power distribution plate ( 14 ) and comprising power contacts for a second dual-polarity power distribution plate ( 13 ), wherein:

the connector ( 12 ) comprises a pair of separate electrical connection parts ( 18 , 19 ) which together electrically connect two power busbars ( 16 b , 17 b ) of the first dual-polarity power distribution plate ( 14 ) to two power busbars ( 16 a , 17 a ) of the second dual-polarity power distribution plate ( 13 ), the device further comprising:

a first electrical connection part ( 18 ) comprising three different parts, wherein said first electrical connection part ( 18 ) comprises:

a first power contact branch ( 21 a );

a first base ( 20 a ) fixed at a first end of the first power contact branch ( 21 a ); and

a first deformable metal strip ( 22 a ) fixed at a second end of the first power contact branch ( 21 a ), opposite to the first end of the first power contact branch ( 21 a ), wherein the first base ( 20 a ) electrically connects and mechanically non-reversibly rigidly fastens said first electrical connection part ( 18 ) to a first power busbar ( 16 b ) of the first dual-polarity power distribution plate ( 14 ), wherein the first power contact branch ( 21 a ) extends from the first base ( 20 a ) towards the second dual-polarity power distribution plate ( 13 ); and wherein the first deformable metal strip ( 22 a ) electrically connects said first power busbar ( 16 b ) of the first dual-polarity power distribution plate ( 14 ) to a first power busbar ( 16 a ) of the second dual-polarity power distribution plate ( 13 ); the first electrical connection part ( 18 ) being elastically deformable only at its first deformable metal strip ( 22 a ); and

a second electrical connection part ( 19 ) comprising three different parts, wherein said second electrical connection part ( 19 ) comprises:

a second power contact branch ( 21 b );

a second base ( 20 b ) fixed at a first end of the second power contact branch ( 21 b ); and

a second deformable metal strip ( 22 b ) fixed at a second end of the second power contact branch ( 21 b ), opposite to the first end of said second power contact branch ( 21 b ), wherein the second base ( 20 b ) electrically connects and mechanically non-reversibly rigidly fastens said second electrical connection part ( 19 ) to a second power busbar ( 17 b ) of the first dual-polarity power distribution plate ( 14 ), wherein the second power contact branch ( 21 b ) extends from the second base ( 20 b ) towards the second dual-polarity power distribution plate ( 13 ), and wherein the second deformable metal strip ( 22 b ) electrically connects the second power busbar ( 17 b ) of the first power distribution plate ( 14 ) to the second power busbar ( 17 a ) of the second power distribution plate ( 13 ), the second electrical connection part ( 19 ) being elastically deformable only at its second deformable metal strip ( 22 b ),

wherein the first and second power busbars ( 16 b , 17 b ) of the first dual-polarity power distribution plate ( 14 ) are connected to two different potential levels and are located between the first and second electrical connection parts ( 18 , 19 ), wherein the first and second power busbars ( 16 a , 17 a ) of the second dual-polarity power distribution plate ( 13 ) are connected to two different potential levels and are located between the first and second electrical connection parts ( 18 , 19 ).

2. The device according to claim 1 , in which the first and second electrical connection parts ( 18 , 19 ) are made of metal.

3. The device according to claim 1 , in which the first deformable metal strip ( 22 a ) and the second deformable metal strip ( 22 b ) are elastically deformable conductive strips.

4. The device according to claim 3 , in which the first and second deformable metal strips ( 22 a , 22 b ) are fastened to their respective power contact branches ( 21 a , 21 b ).

5. The device according to claim 1 , wherein the first and second dual-polarity power distribution plates ( 14 , 13 ), each comprise a respective insulating plate ( 15 b , 15 a ) and wherein two pairs of the power busbars ( 16 b and 17 b , 16 a and 17 a ) are provided on two mutually opposite faces of said respective insulating plates ( 15 b , 15 a ).

6. The device according to claim 5 , in which the first power bar ( 16 b ) of the first dual-polarity power distribution plate ( 14 ) and the first power bar ( 16 a ) of the second dual-polarity power distribution plate ( 13 ) have one polarity, and the second power bar ( 17 b ) of the first dual-polarity power distribution plate ( 14 ) and the second power bar ( 17 a ) of the second dual-polarity power distribution plate ( 13 ) has another polarity.

7. The device according to claim 5 , in which the first and second electrical connection parts ( 18 , 19 ) are fastened on either side of the first power distribution plate ( 14 ).

8. The device according to claim 5 , in which each pair of the first and second power busbars ( 16 a and 17 a , 16 b and 17 b ) are bonded or screwed to a respective insulating plate ( 15 a , 15 b ).

9. The device according to claim 5 , in which the first and second electrical connection parts ( 18 , 19 ) are fastened to the first dual-polarity power distribution plate ( 14 ) by means of screwing or crimping.