Method and device for charging several electrochemical cells
CA 2379113 C · Owner: Barrault, Michel · Inventors: Lascaud, Stephane; Bettega, Eric; Barrault, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for charging several electrochemical cells (5 6, 7), connected in series, to a charger (1) for adjusting the voltage and the charging current. The method consists in: permanently detecting the voltage of each cell and when a first cell reaches a predetermined voltage threshold applying an increment to the charging current of said several cells (5 6, 7) and simultaneously connecting in parallel to said first cell a shunt arm of a current equivalent to the increment of the charging current of said several cells (5 6, 7) and when each of the following cells reaches said voltage threshold connecting also in parallel to said cell a shunt arm of a current …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 21, 2000 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.