Chemistry: electrical current producing apparatus – product – and – With control means responsive to battery condition sensing... – Electrolyte feeding control from reserve supply
Patent
1997-04-10
2000-09-19
Nuzzolillo, Maria
Chemistry: electrical current producing apparatus, product, and
With control means responsive to battery condition sensing...
Electrolyte feeding control from reserve supply
429 74, 429 76, 429 77, 429 78, 429 80, 429175, 137260, H01M 200, H01M 236, H01M 238, H01M 208
Patent
active
061209295
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a lid for electric accumulator batteries which is suited to obtain quick charges and devices co-operating with said lid, suited to obtain said quick charges.
It is a known fact that the electric accumulator batteries undergo a series of charges during their lifespan which are done by connecting their poles with an external source of electric power.
In particular, when the accumulator batteries are new, they undergo a first charge which is done by the manufacturer and which is needed for the formation of the elements. Successively, during their lifespan, they also undergo a plurality of other charges which are done by the user, each of them being suited to restore their best operating conditions.
It is a known fact that the charging process is rather long (8 to 10 hours approx.) but it can be considerably shortened by performing the charge with suitable expedients. For instance, it is a known fact that the time to perform the first charge for the formation of the elements can be considerably shortened, if the charge itself is done by using electrolyte at low density kept at a constant temperature by means of an external recycling process in a cooling closed circuit.
With regard to the successive charges which are performed during the lifespan of the accumulator battery, these can also be accelerated if while they are performed, air under pressure is let into the accumulator battery, since air under pressure, by causing the electrolyte to bubble, prevents its stratification.
By operating with such expedients, the charging and recharging times are considerably shortened.
SUMMARY OF THE INVENTION
There are some known devices which are applied to the accumulator batteries and which perform the recycling of the electrolyte and its simultaneous cooling inside the accumulator battery, thus allowing the user to quickly perform the first charge for the formation of the elements. Such devices belonging to the known technique present, however, the inconvenience that the inlet of the electrolyte occurs through the upper part of the container and, consequently, the recycling process mostly affects the upper layers of the electrolyte rather than the layers in the middle position or near the bottom.
With regard to the maintenance re-charges of the accumulator battery which are performed by the user during the lifespan in the accumulator battery itself, there are some known devices which permit the blowing of air inside the accumulator battery during the re-charging operation, thus preventing the stratification of the electrolyte. Such devices belonging to the known technique essentially consist of a vertical tube which penetrates into the accumulator battery until it is near the bottom and through which air is blown in by means of a terminal sleeve attached to the lid.
One limit that such devices present is that they only allow the blowing of air but they do not also allow the re-filling of the electrolyte which is always necessary during the re-charging operations. It is understood that such an operating method implies rather long performing times.
The purpose of the present invention is to the overcome the mentioned inconveniences.
The first purpose of the present invention is to obtain a lid for accumulator batteries to which it is possible to apply a first device which permits the cooling and the closed-circuit circulation of the electrolyte outside the accumulator battery that affect the whole mass of the electrolyte itself, so as to quickly perform the first charge for the formation of the elements.
Another purpose of the present invention is to obtain a lid for accumulator batteries to which it is possible to apply a second device which permits the blowing of air into the accumulator battery, so as to quickly perform also the maintenance re-charges during the lifespan of the accumulator battery.
Another purpose is that said second device also permits the re-filling of the electrolyte.
Not the last purpose is that the lid according to the invention and the devic
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Crepeau Jonathan
Nuzzolillo Maria
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