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John O | October 2016

Renault applies for patent on EV battery device


french automobile manufacturer renault has applied for a u.s. patent on an electric vehicle battery thermal management device, according to puretemp.

 

renault_600

(wikimedia commons)

 

the abstract from the applications stated:

 

“the invention relates to a device for the thermal management of a battery of electric accumulator cells assembled within a rigid casing, said device comprising thermal storage means incorporated into said battery comprising a chamber containing a phase-change material and having a volume for exchange of heat with said accumulator cells which is delimited by at least part of said casing, the melting of the phase-change material being able to store heat, and the solidification of the phase-change material being able to release the heat previously stored.

 

according to the invention, said chamber is equipped at its distal end with an expansion vessel able to absorb the expansions of said phase-change material as it changes phase."

 

see the full patent application at http://www.freepatentsonline.com/20160264018.pdf

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