Module for an electric energy storage assembly
The invention relates to a module including a housing ( 10 ) in which are provided at least two electric energy storage assemblies ( 20 ) connected by connection means ( 30 ) and at least one management electronic board ( 40 ) for managing the charging and discharging of the energy storage means ( 20 ), wherein the different walls of the housing ( 10 ) are in thermal contact while being electrically insulated, respectively, for at least one wall relative to the electric energy storage assemblies ( 20 ) and for at least another wall with the management electronic board ( 40 ), so as to promote the cooling of said module.
1. Module comprising a casing comprising at least two opposite walls and at least one different wall other than said two opposite walls, at least two electric energy storage assemblies ( 20 ) being arranged in a plurality of lines respectively in said casing so that their axis of revolution are perpendicular to said two opposite walls ( 12 , 13 ) of the casing ( 10 ), said at least two electric energy storage assemblies being connected by connection means, and at least one electronic board ( 40 ) for energy management and diagnosis of the energy storage assemblies is arranged in said casing,
wherein
said two opposite walls ( 12 , 13 ) and said at least one different wall ( 14 ) of the casing, are electrically insulated,
one of the two opposite walls ( 12 , 13 ) being in physical contact with heat dissipation elements ( 15 ) which are connected to the electric energy storage assemblies ( 20 ), while said one of the two opposite walls is not in physical contact with the electronic management board,
said at least one different wall ( 14 ) being in physical contact with the electronic management board, while said at least one different wall is not in physical contact with the heat dissipation elements ( 15 ), and
said electric energy storage assemblies being in thermal contact with one of the two opposite walls by the way of the heat dissipation elements, while the electronic management board is in thermal contact with said different wall in order to promote cooling of said module.
2. Module according to claim 1 , wherein the casing comprises fins on at least one outer face of the casing.
3. Module according to claim 2 , wherein the fins are arranged on the outer face of the wall of the casing in contact with the heat dissipation elements connected to the storage assemblies.
4. Module according to claim 2 , wherein the fins are arranged on the outer face of the other wall of the casing in contact with the electronic management board.
5. Module according to claim 1 , wherein the casing is in aluminium.
6. Module according to claim 1 , wherein the casing is in carbon composite material.
7. Module according to claim 1 , wherein the wall in contact with the heat dissipation elements is the lower wall of the casing and the other wall in contact with the electronic management board is a side wall of the casing.
8. Module according to claim 1 , wherein the wall in contact with the heat dissipation elements comprises or is associated with a base in which a cooling device is arranged.
9. Module according to claim 8 , wherein the cooling device comprises a circulation circuit for a cooling liquid.
10. Module according to claim 1 , wherein the electronic management board comprises a layer of epoxy resin on which a copper printed circuit is bonded.
11. Module according to claim 10 , wherein the epoxy resin layer is in contact with the inner face of the other wall of the casing.
12. Module according to claim 10 , wherein the electronic management board comprises an aluminium plate on the epoxy resin layer, the aluminium plate being in contact with the inner face of the other wall of the casing.
13. Module according to claim 1 , wherein the two walls whilst being electrically insulated are in contact with the heat dissipation elements connected to the energy storage assemblies.
14. Module according to claim 13 , wherein the two walls in contact with the heat dissipation elements connected to the energy storage assemblies are the upper and lower walls of the casing.
15. Module according to claim 1 , wherein it comprises at least one electronic management board, said electronic management board being in contact with at least one side wall of the casing.
16. Module according to claim 15 , wherein it comprises as many electronic management boards as the casing has side walls, each of said boards being in contact with a respective side wall of the casing.
17. Module according to claim 15 , wherein the management boards are in contact with the inner face of the side wall of the casing.
18. Module according to claim 15 , wherein the management boards are in contact with the outer face of the side wall of the casing.
19. Module according to claim 1 , wherein the connection means between two adjacent storage assemblies comprise two covers electrically connected by a terminal strip, each cover comprising a connection terminal intended to be in contact with a through borehole of the terminal strip.
20. Module according to claim 19 , wherein the borehole passing through the terminal strip has high surface roughness to promote electrical contact with the connection terminal.
21. Module according to claim 19 , wherein the terminal strips are in copper.
22. Module according to claim 21 , wherein the terminal strips in copper comprise tin-plating as surface protection.
23. Module according to claim 9 , wherein the terminal strips are in aluminium.
24. Module according to claim 23 , wherein the terminal strips in aluminium comprise tin-plating or nickel-plating as surface protection.
25. Module according to claim 1 , wherein the connection means between two adjacent storage assemblies comprise two covers electrically connected by a terminal strip joined by laser transparent welding.
26. Module according to claim 25 , wherein the welding of the terminal strip is made through preferential thinned regions.
27. Module according to claim 1 , wherein the connection means between two adjacent storage assemblies comprise two covers electrically connected by a terminal strip brazed onto the covers.
28. Module according to claim 1 , wherein the connection means between two adjacent storage assemblies comprise two covers electrically connected by a terminal strip by diffusion-brazing of the terminal strip onto the covers.
29. Module according to claim 19 , wherein the contact surface between the terminal strip and a cover is equal to or more than one quarter of the surface of the cover.
30. Module according to claim 17 , wherein the contact surface between the terminal strip and a cover is equal to or more than one half of the surface of the cover.
31. Module according to claim 1 , wherein two adjacent storage assemblies are electrically connected by a longitudinal part whose ends form the respective upper or lower covers of each of the adjacent storage assemblies, on as electrically to connect said adjacent storage assemblies.
32. Module according to claim 31 , wherein each end of the longitudinal part comprises preferential radial thinned regions.
33. Module according to claim 31 , wherein the preferential thinned regions are perpendicular two by two and have an angle of 45° with the longitudinal axis (B-B) of part.
34. Module according to claim 31 , wherein the preferential thinned regions are perpendicular two by two, at least one region of each end extending along the longitudinal axis (B-B) of part.
35. Module according to claim 1 , wherein the connection means comprise the heat dissipation elements.
36. Module according to claim 1 , wherein the heat dissipation elements between the elements and the wall of the module comprise a layer of elastomer.