The invention generally relates to an assembly of electric accumulators, and more particularly to a module and a process for assembling tubular electric accumulators.
Various applications require assembling an important number of electric accumulators arranged in parallel and in series, as in the case of an electric vehicle, for example a bus. It is desirable that the electrical interconnection resistance of the accumulators is minimal. It is also desirable that the assembly of the accumulators may allow to conveniently replace a group of accumulators that could for example exhibit a defect. Other aspects such as thermal expansion of the accumulators, the strength of the contacts in case of vibration and the weight also fall into account.
An object of the present invention is to provide a module and a process for assembling tubular electric accumulators, for example cylindrical accumulators, minimizing an electrical interconnection resistance of the accumulators and which may advantageously be suitable for applications as in the case of an electric vehicle.
According to an aspect of the invention, there is provided an assembly module for tubular electric accumulators, the assembly module comprising:
According to another aspect of the invention, there is provided a process for assembling tubular electric accumulators, the process comprising the steps of:
A detailed description of the preferred embodiments of the invention will be given hereinafter with reference to the following drawings:
Referring to
The surface 10 of the first support element 6 may comprise housings 26 distributed between the ends of the accumulators 4, for receiving and wedging the nuts 18. The housings 26 may have hexagonal shapes in the case where the nuts 18 are hexagonal. The second support element 8 may comprise holes 28 aligned with the screws 22 to allow their screwing in corresponding nuts 18, for example with an appropriate tool (not shown) as a hexagonal key. The holes 28 may have shoulders 30 preventing passage of the screws 22.
The surfaces 12 of the support elements 6, 8 may comprise recesses 32 (only the recess 32 of the support element 6 is visible in the figure) extending between the ends of the accumulators 4, so that plates 34 made of rigid material are inserted into the recesses 32 between the support elements 6, 8 and the corresponding sheets 14, 16. Such plates 34 allow in particular increasing the mechanical rigidity and the surface of contact with the sheets 14, 16, increasing the electrical conductivity at the same time.
The sheets 14, 16 may have tabs 36 projecting on sides of the support elements 6, 8 to provide electrical fastening points for connecting conductors (not shown) used for example to connect a test device (not shown) for the accumulators 4 of the module 2.
The support elements 6, 8 may have generally rectangular shapes, adapted for uniform and symmetrical distribution of the openings 10 in the support elements 6, 8, and the side-by-side arrangement of stacks of modules 2 assembled together if desired. In the illustrated embodiment, the module 2 allows mounting five accumulators 4 in parallel, but the module 2 may easily be made for mounting nine or another number of accumulators 4 in parallel if desired. The support elements 6, 8 may be provided with brackets 38 projecting on one side of the module 2, for example to mount an electronic circuit (not shown) if desired. The support elements 6, 8 may have other recesses 40 to lighten the weight of the module 2.
Referring to
While embodiments of the invention have been illustrated in the accompanying drawings and described above, it will be evident to those skilled in the art that modifications may be made therein without departing from the invention.
Number | Date | Country | Kind |
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CA 2921925 | Feb 2016 | CA | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CA2017/050218 | 2/22/2017 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2017/143433 | 8/31/2017 | WO | A |
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