Multicell battery monitoring system with single sensor wire
CA 2117166 C · Owner: Sterescu, Vlad · Inventors: Halton, Padraig; Noworolski, Jan Mark; Lee, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for detecting the condition of the individual cells of a bank of serially connected battery cells using a single common sensing wire connected through respective non-linear component switching means to respective reference terminals located between adjacent batteries and at the end of the battery assembly which method comprises: injecting into the common sensing wire a voltage or current of magnitude polarity and duration sufficient to, serially alter the common state of the respective switching means; detecting an instantaneous change of impedance at points of transition of the state of the individual switches; determining the voltage and/or current of the common sensing wire at …
Read the whole patent
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 March 7, 1994 and granted January 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2016.
- 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
Timeline From CIPO dates
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.