System and method for determining battery state-of-health
CA 2397420 A1 · Owner: Singh, Harmohan · Inventors: Singh, Harmohan; Palanisamy, Thirumalai; Huykman, Richard B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for accurate and in real time determination of factors relating to the state of health of a storage battery. The system measures the values of battery temperature (5), voltage (4) and current (3) flow into and out of the battery. This data is multiplexed (20) into a computer and the battery's internal resistance (IR), polarization resistance (PR) state of , charge (SOC) and its cold cranking amp (CCA) capability are computed and displayed (6). The presence of shorted and mismatched cells also can be determined and displayed. The state of health of the battery is related to these displayed measured values and calculated factors which are made known to the user of …
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 January 11, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 2023.
- 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.